diff --git a/agent/ubuntu/Dockerfile b/agent/ubuntu/Dockerfile
index 0412e8b43..44651175d 100644
--- a/agent/ubuntu/Dockerfile
+++ b/agent/ubuntu/Dockerfile
@@ -6,13 +6,13 @@ ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG MAJOR_VERSION=4.2
 ARG ZBX_VERSION=${MAJOR_VERSION}.1
 ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     ZBX_TYPE=agent ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES}
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             autoconf \
             automake \
             libc6-dev \
@@ -55,7 +55,7 @@ ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG MAJOR_VERSION=4.2
 ARG ZBX_VERSION=${MAJOR_VERSION}.1
 ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     ZBX_TYPE=agent ZBX_DB_TYPE=none ZBX_OPT_TYPE=none \
     ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES}
 ENV TINI_VERSION v0.18.0
@@ -82,7 +82,7 @@ COPY --from=builder  /tmp/zabbix-${ZBX_VERSION}/conf/zabbix_agentd.conf /etc/zab
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /sbin/tini
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -98,7 +98,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     mkdir -p /var/lib/zabbix/modules && \
     chown --quiet -R zabbix:root /var/lib/zabbix && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             libpcre3 \
             libssl1.1 \
             libldap-2.4 && \
diff --git a/java-gateway/ubuntu/Dockerfile b/java-gateway/ubuntu/Dockerfile
index 7c373a5a8..9d18884f9 100644
--- a/java-gateway/ubuntu/Dockerfile
+++ b/java-gateway/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     ZBX_TYPE=java-gateway ZBX_DB_TYPE=none ZBX_OPT_TYPE=none
 
 LABEL org.label-schema.name="zabbix-${ZBX_TYPE}-ubuntu" \
@@ -22,7 +22,7 @@ LABEL org.label-schema.name="zabbix-${ZBX_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -35,7 +35,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     mkdir -p /etc/zabbix/ && \
     chown --quiet -R zabbix:root /etc/zabbix && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             openjdk-8-jre-headless && \
     apt-get ${APT_FLAGS_COMMON} autoremove && \
     apt-get ${APT_FLAGS_COMMON} clean && \
@@ -52,7 +52,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
       org.label-schema.docker.cmd="docker run --name zabbix-${ZBX_TYPE} --link zabbix-server:zabbix-server -p 10052:10052 -d zabbix-${ZBX_TYPE}:ubuntu-${ZBX_VERSION}"
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             autoconf \
             automake \
             libc6-dev \
@@ -82,7 +82,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     rm -rf /usr/sbin/zabbix_java/lib/*.xml && \
     cd /tmp/ && \
     rm -rf /tmp/zabbix-${ZBX_VERSION}/ && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             autoconf \
             automake \
             libc6-dev \
diff --git a/proxy-mysql/ubuntu/Dockerfile b/proxy-mysql/ubuntu/Dockerfile
index f96973fe9..d36b119b4 100644
--- a/proxy-mysql/ubuntu/Dockerfile
+++ b/proxy-mysql/ubuntu/Dockerfile
@@ -8,7 +8,7 @@ ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG DB_TYPE=mysql
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     MIBDIRS=/var/lib/snmp/mibs/ietf:/var/lib/snmp/mibs/iana:/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
     ZBX_TYPE=proxy ZBX_DB_TYPE=mysql ZBX_OPT_TYPE=none
 ENV TINI_VERSION v0.18.0
@@ -25,7 +25,7 @@ LABEL org.label-schema.name="zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -49,7 +49,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     chown --quiet -R zabbix:root /var/lib/zabbix && \
     mkdir -p /usr/share/doc/zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE} && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             fping \
             libcurl4 \
             libevent-2.1 \
@@ -81,7 +81,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /sbin/tini
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             autoconf \
             automake \
             gcc \
@@ -136,7 +136,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     cp database/${ZBX_DB_TYPE}/create.sql.gz /usr/share/doc/zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE}/ && \
     cd /tmp/ && \
     rm -rf /tmp/zabbix-${ZBX_VERSION}/ && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             autoconf \
             automake \
             gcc \
diff --git a/proxy-sqlite3/ubuntu/Dockerfile b/proxy-sqlite3/ubuntu/Dockerfile
index 592a43dfe..00959483d 100644
--- a/proxy-sqlite3/ubuntu/Dockerfile
+++ b/proxy-sqlite3/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     MIBDIRS=/var/lib/snmp/mibs/ietf:/var/lib/snmp/mibs/iana:/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
     ZBX_TYPE=proxy ZBX_DB_TYPE=sqlite3 ZBX_OPT_TYPE=none
 ENV TINI_VERSION v0.18.0
@@ -24,7 +24,7 @@ LABEL org.label-schema.name="zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -47,7 +47,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     mkdir -p /var/lib/zabbix/ssl/ssl_ca && \
     chown --quiet -R zabbix:root /var/lib/zabbix && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             fping \
             libcurl4 \
             libevent-2.1 \
@@ -78,7 +78,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /sbin/tini
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             autoconf \
             automake \
             gcc \
@@ -130,7 +130,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     chown --quiet -R zabbix:root /etc/zabbix && \
     cd /tmp/ && \
     rm -rf /tmp/zabbix-${ZBX_VERSION}/ && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             autoconf \
             automake \
             gcc \
diff --git a/server-mysql/ubuntu/Dockerfile b/server-mysql/ubuntu/Dockerfile
index 73a1c4d5e..c58e552c3 100644
--- a/server-mysql/ubuntu/Dockerfile
+++ b/server-mysql/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     MIBDIRS=/var/lib/snmp/mibs/ietf:/var/lib/snmp/mibs/iana:/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
     ZBX_TYPE=server ZBX_DB_TYPE=mysql ZBX_OPT_TYPE=none
 ENV TINI_VERSION v0.18.0
@@ -24,7 +24,7 @@ LABEL org.label-schema.name="zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -50,7 +50,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     chown --quiet -R zabbix:root /var/lib/zabbix && \
     mkdir -p /usr/share/doc/zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE} && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             iputils-ping \
             traceroute \
             fping \
@@ -85,7 +85,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /sbin/tini
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             autoconf \
             automake \
             gcc \
@@ -144,7 +144,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     cp database/${ZBX_DB_TYPE}/create.sql.gz /usr/share/doc/zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE}/ && \
     cd /tmp/ && \
     rm -rf /tmp/zabbix-${ZBX_VERSION}/ && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             autoconf \
             automake \
             gcc \
diff --git a/server-pgsql/ubuntu/Dockerfile b/server-pgsql/ubuntu/Dockerfile
index 15829c9b9..52a7c0e12 100644
--- a/server-pgsql/ubuntu/Dockerfile
+++ b/server-pgsql/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     MIBDIRS=/var/lib/snmp/mibs/ietf:/var/lib/snmp/mibs/iana:/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
     ZBX_TYPE=server ZBX_DB_TYPE=postgresql ZBX_OPT_TYPE=none
 ENV TINI_VERSION v0.18.0
@@ -24,7 +24,7 @@ LABEL org.label-schema.name="zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -50,7 +50,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     chown --quiet -R zabbix:root /var/lib/zabbix && \
     mkdir -p /usr/share/doc/zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE} && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             iputils-ping \
             traceroute \
             fping \
@@ -85,7 +85,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /sbin/tini
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             autoconf \
             automake \
             gcc \
@@ -145,7 +145,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     cp database/${ZBX_DB_TYPE}/timescaledb.sql /usr/share/doc/zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE}/ && \
     cd /tmp/ && \
     rm -rf /tmp/zabbix-${ZBX_VERSION}/ && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             autoconf \
             automake \
             gcc \
diff --git a/snmptraps/ubuntu/Dockerfile b/snmptraps/ubuntu/Dockerfile
index 6452d9a85..e501a658e 100644
--- a/snmptraps/ubuntu/Dockerfile
+++ b/snmptraps/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     MIBDIRS=/var/lib/mibs/iana:/var/lib/mibs/ietf:/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL
 
 LABEL org.label-schema.name="zabbix-snmptraps-ubuntu" \
@@ -34,7 +34,7 @@ STOPSIGNAL SIGTERM
 COPY ["snmptrapfmt_1.14+nmu1ubuntu2_amd64.deb", "/tmp/"]
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -44,7 +44,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
             --home /var/lib/zabbix/ \
         zabbix && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             snmp-mibs-downloader \
             snmptrapd \
             supervisor && \
diff --git a/web-apache-mysql/ubuntu/Dockerfile b/web-apache-mysql/ubuntu/Dockerfile
index 4dcd94ef3..c054fd852 100644
--- a/web-apache-mysql/ubuntu/Dockerfile
+++ b/web-apache-mysql/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     ZBX_TYPE=frontend ZBX_DB_TYPE=mysql ZBX_OPT_TYPE=apache
 
 LABEL org.label-schema.name="zabbix-web-${ZBX_OPT_TYPE}-${DB_TYPE}-ubuntu" \
@@ -22,7 +22,7 @@ LABEL org.label-schema.name="zabbix-web-${ZBX_OPT_TYPE}-${DB_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -36,7 +36,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     mkdir -p /etc/zabbix/web && \
     chown --quiet -R zabbix:root /etc/zabbix && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             apache2 \
             curl \
             libapache2-mod-php \
@@ -66,7 +66,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
 COPY ["conf/tmp/font-config", "/tmp/font-config"]
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             gettext \
             patch \
             ca-certificates \
@@ -93,7 +93,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     dpkg-reconfigure locales && \
     find /usr/share/zabbix/locale -name '*.po' | xargs rm -f && \
     find /usr/share/zabbix/locale -name '*.sh' | xargs rm -f && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             gettext \
             patch \
             ca-certificates \
diff --git a/web-apache-pgsql/ubuntu/Dockerfile b/web-apache-pgsql/ubuntu/Dockerfile
index 2a6018bd6..b0833c230 100644
--- a/web-apache-pgsql/ubuntu/Dockerfile
+++ b/web-apache-pgsql/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     ZBX_TYPE=frontend ZBX_DB_TYPE=postgresql ZBX_OPT_TYPE=apache
 
 LABEL org.label-schema.name="zabbix-web-${ZBX_OPT_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
@@ -22,7 +22,7 @@ LABEL org.label-schema.name="zabbix-web-${ZBX_OPT_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -36,7 +36,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     mkdir -p /etc/zabbix/web && \
     chown --quiet -R zabbix:root /etc/zabbix && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             apache2 \
             curl \
             libapache2-mod-php \
@@ -66,7 +66,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
 COPY ["conf/tmp/font-config", "/tmp/font-config"]
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             gettext \
             patch \
             ca-certificates \
@@ -93,7 +93,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     dpkg-reconfigure locales && \
     find /usr/share/zabbix/locale -name '*.po' | xargs rm -f && \
     find /usr/share/zabbix/locale -name '*.sh' | xargs rm -f && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             gettext \
             patch \
             ca-certificates \
diff --git a/web-nginx-mysql/ubuntu/Dockerfile b/web-nginx-mysql/ubuntu/Dockerfile
index 86edf80c3..9707b486f 100644
--- a/web-nginx-mysql/ubuntu/Dockerfile
+++ b/web-nginx-mysql/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     ZBX_TYPE=frontend ZBX_DB_TYPE=mysql ZBX_OPT_TYPE=nginx
 
 LABEL org.label-schema.name="zabbix-web-${ZBX_OPT_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
@@ -22,7 +22,7 @@ LABEL org.label-schema.name="zabbix-web-${ZBX_OPT_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales gnupg2 && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales gnupg2 && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -36,13 +36,13 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     mkdir -p /etc/zabbix/web && \
     chown --quiet -R zabbix:root /etc/zabbix && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_COMMON} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} install \
             wget && \
     DISTRIB_CODENAME=$(/bin/bash -c 'source /etc/lsb-release && echo $DISTRIB_CODENAME') && \
     wget -q https://nginx.org/keys/nginx_signing.key -O- | apt-key add - && \
     echo "deb http://nginx.org/packages/ubuntu/ $DISTRIB_CODENAME nginx" >> /etc/apt/sources.list.d/nginx.list && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             curl \
             mysql-client \
             nginx \
@@ -56,7 +56,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
             php7.2-xml \
             supervisor \
             ttf-dejavu-core && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             wget && \
     apt-get ${APT_FLAGS_COMMON} autoremove && \
     apt-get ${APT_FLAGS_COMMON} clean && \
@@ -78,7 +78,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
 COPY ["conf/tmp/font-config", "/tmp/font-config"]
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             gettext \
             patch \
             ca-certificates \
@@ -105,7 +105,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     dpkg-reconfigure locales && \
     find /usr/share/zabbix/locale -name '*.po' | xargs rm -f && \
     find /usr/share/zabbix/locale -name '*.sh' | xargs rm -f && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             gettext \
             patch \
             ca-certificates \
diff --git a/web-nginx-pgsql/ubuntu/Dockerfile b/web-nginx-pgsql/ubuntu/Dockerfile
index 76ea6689d..e7b56dafb 100644
--- a/web-nginx-pgsql/ubuntu/Dockerfile
+++ b/web-nginx-pgsql/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG APT_FLAGS_COMMON="-y"
 ARG APT_FLAGS_PERSISTENT="${APT_FLAGS_COMMON} --no-install-recommends"
 ARG APT_FLAGS_DEV="${APT_FLAGS_COMMON} --no-install-recommends"
-ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     ZBX_TYPE=frontend ZBX_DB_TYPE=postgresql ZBX_OPT_TYPE=nginx
 
 LABEL org.label-schema.name="zabbix-web-${ZBX_OPT_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
@@ -22,7 +22,7 @@ LABEL org.label-schema.name="zabbix-web-${ZBX_OPT_TYPE}-${ZBX_DB_TYPE}-ubuntu" \
 STOPSIGNAL SIGTERM
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales gnupg2 && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales gnupg2 && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -36,13 +36,13 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     mkdir -p /etc/zabbix/web && \
     chown --quiet -R zabbix:root /etc/zabbix && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_COMMON} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} install \
             wget && \
     DISTRIB_CODENAME=$(/bin/bash -c 'source /etc/lsb-release && echo $DISTRIB_CODENAME') && \
     wget -q https://nginx.org/keys/nginx_signing.key -O- | apt-key add - && \
     echo "deb http://nginx.org/packages/ubuntu/ $DISTRIB_CODENAME nginx" >> /etc/apt/sources.list.d/nginx.list && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             curl \
             nginx \
             php7.2-bcmath \
@@ -56,7 +56,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
             postgresql-client \
             supervisor \
             ttf-dejavu-core && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             wget && \
     apt-get ${APT_FLAGS_COMMON} autoremove && \
     apt-get ${APT_FLAGS_COMMON} clean && \
@@ -78,7 +78,7 @@ LABEL org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSI
 COPY ["conf/tmp/font-config", "/tmp/font-config"]
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             gettext \
             patch \
             ca-certificates \
@@ -105,7 +105,7 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     dpkg-reconfigure locales && \
     find /usr/share/zabbix/locale -name '*.po' | xargs rm -f && \
     find /usr/share/zabbix/locale -name '*.sh' | xargs rm -f && \
-    apt-get ${APT_FLAGS_COMMON} purge \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} purge \
             gettext \
             patch \
             ca-certificates \
diff --git a/zabbix-appliance/ubuntu/Dockerfile b/zabbix-appliance/ubuntu/Dockerfile
index 42c9d9b8b..446ea5d89 100644
--- a/zabbix-appliance/ubuntu/Dockerfile
+++ b/zabbix-appliance/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG MAJOR_VERSION=4.2
 ARG ZBX_VERSION=${MAJOR_VERSION}.1
 ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
 ENV ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
-    LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+    LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 TERM=xterm \
     MIBDIRS=/var/lib/snmp/mibs/ietf:/var/lib/snmp/mibs/iana:/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
     ZBX_TYPE=server ZBX_DB_TYPE=mysql ZBX_OPT_TYPE=nginx \
     MYSQL_ALLOW_EMPTY_PASSWORD=true ZBX_ADD_SERVER=true ZBX_ADD_WEB=true DB_SERVER_HOST=localhost MYSQL_USER=zabbix ZBX_ADD_JAVA_GATEWAY=true ZBX_JAVAGATEWAY_ENABLE=true ZBX_JAVAGATEWAY=localhost
@@ -15,10 +15,10 @@ ENV ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
 COPY ["conf/tmp/font-config", "/tmp/font-config"]
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install locales && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install locales && \
     locale-gen $LC_ALL && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_DEV} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_DEV} install \
             autoconf \
             automake \
             gcc \
@@ -95,7 +95,7 @@ ARG MAJOR_VERSION=4.2
 ARG ZBX_VERSION=${MAJOR_VERSION}.1
 ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
 ENV ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
-    LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive TERM=xterm \
+    LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8TERM=xterm \
     MIBDIRS=/var/lib/snmp/mibs/ietf:/var/lib/snmp/mibs/iana:/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
     ZBX_TYPE=server ZBX_DB_TYPE=mysql ZBX_OPT_TYPE=nginx \
     MYSQL_ALLOW_EMPTY_PASSWORD=true ZBX_ADD_SERVER=true ZBX_ADD_WEB=true DB_SERVER_HOST=localhost MYSQL_USER=zabbix ZBX_ADD_JAVA_GATEWAY=true ZBX_JAVAGATEWAY_ENABLE=true ZBX_JAVAGATEWAY=localhost
@@ -129,7 +129,7 @@ COPY --from=builder /tmp/zabbix-${ZBX_VERSION}/frontends/php/ /usr/share/zabbix/
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /sbin/tini
 
 RUN apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install locales gnupg2 && \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install locales gnupg2 && \
     locale-gen $LC_ALL && \
     echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     addgroup --system --quiet zabbix && \
@@ -155,13 +155,13 @@ RUN apt-get ${APT_FLAGS_COMMON} update && \
     chown --quiet -R zabbix:root /var/lib/zabbix && \
     mkdir -p /usr/share/doc/zabbix-${ZBX_TYPE}-${ZBX_DB_TYPE}/ && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_COMMON} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_COMMON} install \
             wget && \
     DISTRIB_CODENAME=$(/bin/bash -c 'source /etc/lsb-release && echo $DISTRIB_CODENAME') && \
     wget -q https://nginx.org/keys/nginx_signing.key -O- | apt-key add - && \
     echo "deb http://nginx.org/packages/ubuntu/ $DISTRIB_CODENAME nginx" >> /etc/apt/sources.list.d/nginx.list && \
     apt-get ${APT_FLAGS_COMMON} update && \
-    apt-get ${APT_FLAGS_PERSISTENT} install \
+    DEBIAN_FRONTEND=noninteractive apt-get ${APT_FLAGS_PERSISTENT} install \
             iputils-ping \
             traceroute \
             curl \