diff --git a/snmptraps/ubuntu/Dockerfile b/snmptraps/ubuntu/Dockerfile
index ab5821d8a..ee5783006 100644
--- a/snmptraps/ubuntu/Dockerfile
+++ b/snmptraps/ubuntu/Dockerfile
@@ -80,7 +80,7 @@ RUN set -eux && \
     apt-get -y autoremove && \
     rm -rf /var/lib/apt/lists/*
 
-EXPOSE 162/UDP
+EXPOSE 1162/UDP
 
 WORKDIR /var/lib/zabbix/snmptraps/
 
diff --git a/web-apache-mysql/alpine/Dockerfile b/web-apache-mysql/alpine/Dockerfile
index e576dc333..f12611e7a 100644
--- a/web-apache-mysql/alpine/Dockerfile
+++ b/web-apache-mysql/alpine/Dockerfile
@@ -80,9 +80,9 @@ RUN set -eux && \
     rm -rf tests && \
     ./locale/make_mo.sh && \
     ln -s "/etc/zabbix/web/zabbix.conf.php" "/usr/share/zabbix/conf/zabbix.conf.php" && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/apache2/ /etc/php7/ && \
     chgrp -R 0 /etc/apache2/ /etc/php7/ && \
     chmod -R g=u /etc/apache2/ /etc/php7/ && \
diff --git a/web-apache-mysql/alpine/docker-entrypoint.sh b/web-apache-mysql/alpine/docker-entrypoint.sh
index 1c1a559c2..463218fbf 100755
--- a/web-apache-mysql/alpine/docker-entrypoint.sh
+++ b/web-apache-mysql/alpine/docker-entrypoint.sh
@@ -264,7 +264,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-apache-mysql/centos/Dockerfile b/web-apache-mysql/centos/Dockerfile
index 2a6da73ad..317cd41c0 100644
--- a/web-apache-mysql/centos/Dockerfile
+++ b/web-apache-mysql/centos/Dockerfile
@@ -79,9 +79,9 @@ RUN set -eux && \
     cat /usr/share/zabbix/include/locales.inc.php | grep display | grep true | awk '{$1=$1};1' | \
                 cut -d"'" -f 2 | sort | \
                 xargs -I '{}' bash -c 'echo "{}" && localedef -c -i {} -f UTF-8 {}.UTF-8 2>/dev/null' && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/httpd/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
     chgrp -R 0 /etc/httpd/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
     chmod -R g=u /etc/httpd/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
diff --git a/web-apache-mysql/centos/docker-entrypoint.sh b/web-apache-mysql/centos/docker-entrypoint.sh
index 5a95668cf..9fc0b7da8 100755
--- a/web-apache-mysql/centos/docker-entrypoint.sh
+++ b/web-apache-mysql/centos/docker-entrypoint.sh
@@ -264,7 +264,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-apache-mysql/ubuntu/Dockerfile b/web-apache-mysql/ubuntu/Dockerfile
index 8f24d7fd6..b34e6a274 100644
--- a/web-apache-mysql/ubuntu/Dockerfile
+++ b/web-apache-mysql/ubuntu/Dockerfile
@@ -90,9 +90,9 @@ RUN set -eux && \
     dpkg-reconfigure locales && \
     find /usr/share/zabbix/locale -name '*.po' | xargs rm -f && \
     find /usr/share/zabbix/locale -name '*.sh' | xargs rm -f && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/apache2/ /etc/php/7.2/ && \
     chgrp -R 0 /etc/apache2/ /etc/php/7.2/ && \
     chmod -R g=u /etc/apache2/ /etc/php/7.2/ && \
diff --git a/web-apache-mysql/ubuntu/docker-entrypoint.sh b/web-apache-mysql/ubuntu/docker-entrypoint.sh
index 6ac7c3a9b..11c44c61e 100755
--- a/web-apache-mysql/ubuntu/docker-entrypoint.sh
+++ b/web-apache-mysql/ubuntu/docker-entrypoint.sh
@@ -257,7 +257,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-apache-pgsql/alpine/Dockerfile b/web-apache-pgsql/alpine/Dockerfile
index 467dfa1c3..341ac7f87 100644
--- a/web-apache-pgsql/alpine/Dockerfile
+++ b/web-apache-pgsql/alpine/Dockerfile
@@ -79,9 +79,9 @@ RUN set -eux && \
     rm -rf tests && \
     ./locale/make_mo.sh && \
     ln -s "/etc/zabbix/web/zabbix.conf.php" "/usr/share/zabbix/conf/zabbix.conf.php" && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/apache2/ /etc/php7/ && \
     chgrp -R 0 /etc/apache2/ /etc/php7/ && \
     chmod -R g=u /etc/apache2/ /etc/php7/ && \
diff --git a/web-apache-pgsql/alpine/docker-entrypoint.sh b/web-apache-pgsql/alpine/docker-entrypoint.sh
index 0caaf23bb..e8c2c8ccd 100755
--- a/web-apache-pgsql/alpine/docker-entrypoint.sh
+++ b/web-apache-pgsql/alpine/docker-entrypoint.sh
@@ -250,7 +250,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-apache-pgsql/centos/Dockerfile b/web-apache-pgsql/centos/Dockerfile
index 970041980..a775e8cf2 100644
--- a/web-apache-pgsql/centos/Dockerfile
+++ b/web-apache-pgsql/centos/Dockerfile
@@ -79,9 +79,9 @@ RUN set -eux && \
     cat /usr/share/zabbix/include/locales.inc.php | grep display | grep true | awk '{$1=$1};1' | \
                 cut -d"'" -f 2 | sort | \
                 xargs -I '{}' bash -c 'echo "{}" && localedef -c -i {} -f UTF-8 {}.UTF-8 2>/dev/null' && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/httpd/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
     chgrp -R 0 /etc/httpd/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
     chmod -R g=u /etc/httpd/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
diff --git a/web-apache-pgsql/centos/docker-entrypoint.sh b/web-apache-pgsql/centos/docker-entrypoint.sh
index 4e7591a5a..0e678ebda 100755
--- a/web-apache-pgsql/centos/docker-entrypoint.sh
+++ b/web-apache-pgsql/centos/docker-entrypoint.sh
@@ -262,7 +262,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-apache-pgsql/ubuntu/Dockerfile b/web-apache-pgsql/ubuntu/Dockerfile
index 94596cc17..d5c502455 100644
--- a/web-apache-pgsql/ubuntu/Dockerfile
+++ b/web-apache-pgsql/ubuntu/Dockerfile
@@ -90,9 +90,9 @@ RUN set -eux && \
     dpkg-reconfigure locales && \
     find /usr/share/zabbix/locale -name '*.po' | xargs rm -f && \
     find /usr/share/zabbix/locale -name '*.sh' | xargs rm -f && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/apache2/ /etc/php/7.2/ && \
     chgrp -R 0 /etc/apache2/ /etc/php/7.2/ && \
     chmod -R g=u /etc/apache2/ /etc/php/7.2/ && \
diff --git a/web-apache-pgsql/ubuntu/docker-entrypoint.sh b/web-apache-pgsql/ubuntu/docker-entrypoint.sh
index 04b2ea5ef..15a1fe859 100755
--- a/web-apache-pgsql/ubuntu/docker-entrypoint.sh
+++ b/web-apache-pgsql/ubuntu/docker-entrypoint.sh
@@ -259,7 +259,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-nginx-mysql/alpine/Dockerfile b/web-nginx-mysql/alpine/Dockerfile
index 8127783ef..188ec4dc8 100644
--- a/web-nginx-mysql/alpine/Dockerfile
+++ b/web-nginx-mysql/alpine/Dockerfile
@@ -44,6 +44,7 @@ RUN set -eux && \
             supervisor && \
     rm -rf /etc/php7/php-fpm.d/www.conf && \
     rm -f /etc/nginx/conf.d/*.conf && \
+    ln -sf /dev/fd/2 /var/lib/nginx/logs/error.log && \
     rm -rf /var/cache/apk/*
 
 ARG MAJOR_VERSION=5.0
@@ -73,15 +74,15 @@ RUN set -eux && \
     rm -rf tests && \
     ./locale/make_mo.sh && \
     ln -s "/etc/zabbix/web/zabbix.conf.php" "/usr/share/zabbix/conf/zabbix.conf.php" && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/nginx/ /etc/php7/php-fpm.d/ /etc/php7/php-fpm.conf && \
     chgrp -R 0 /etc/nginx/ /etc/php7/php-fpm.d/ /etc/php7/php-fpm.conf && \
     chmod -R g=u /etc/nginx/ /etc/php7/php-fpm.d/ /etc/php7/php-fpm.conf && \
-    chown --quiet -R zabbix:root /var/lib/php/session/ && \
-    chgrp -R 0 /var/lib/php/session/ && \
-    chmod -R g=u /var/lib/php/session/ && \
+    chown --quiet -R zabbix:root /var/lib/php/session/ /var/lib/nginx/ && \
+    chgrp -R 0 /var/lib/php/session/ /var/lib/nginx/ && \
+    chmod -R g=u /var/lib/php/session/ /var/lib/nginx/ && \
     apk del --purge --no-network \
             build-dependencies && \
     rm -rf /var/cache/apk/*
diff --git a/web-nginx-mysql/alpine/docker-entrypoint.sh b/web-nginx-mysql/alpine/docker-entrypoint.sh
index 4e98d853b..a61a6d6ed 100755
--- a/web-nginx-mysql/alpine/docker-entrypoint.sh
+++ b/web-nginx-mysql/alpine/docker-entrypoint.sh
@@ -229,8 +229,6 @@ prepare_web_server() {
     else
         echo "**** Impossible to enable SSL support for Nginx. Certificates are missed."
     fi
-
-    ln -sf /dev/fd/2 /var/log/nginx/error.log
 }
 
 clear_deploy() {
@@ -287,7 +285,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-nginx-mysql/centos/Dockerfile b/web-nginx-mysql/centos/Dockerfile
index 2c0e261f8..b6e346306 100644
--- a/web-nginx-mysql/centos/Dockerfile
+++ b/web-nginx-mysql/centos/Dockerfile
@@ -71,9 +71,9 @@ RUN set -eux && \
     cat /usr/share/zabbix/include/locales.inc.php | grep display | grep true | awk '{$1=$1};1' | \
                 cut -d"'" -f 2 | sort | \
                 xargs -I '{}' bash -c 'echo "{}" && localedef -c -i {} -f UTF-8 {}.UTF-8 2>/dev/null' && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/nginx/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
     chgrp -R 0 /etc/nginx/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
     chmod -R g=u /etc/nginx/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
diff --git a/web-nginx-mysql/centos/docker-entrypoint.sh b/web-nginx-mysql/centos/docker-entrypoint.sh
index 28f7b123f..35a91bfbf 100755
--- a/web-nginx-mysql/centos/docker-entrypoint.sh
+++ b/web-nginx-mysql/centos/docker-entrypoint.sh
@@ -285,7 +285,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-nginx-mysql/ubuntu/Dockerfile b/web-nginx-mysql/ubuntu/Dockerfile
index 32a18091a..b5ee5ea84 100644
--- a/web-nginx-mysql/ubuntu/Dockerfile
+++ b/web-nginx-mysql/ubuntu/Dockerfile
@@ -58,7 +58,7 @@ RUN set -eux && \
     rm -f /etc/nginx/conf.d/*.conf && \
     rm -rf /var/cache/nginx/ && \
     rm -f /etc/php/7.2/fpm/pool.d/www.conf && \
-    DEBIAN_FRONTEND=noninteractive apt-get -y purge curl gpg dirmngr gpg-agent && \
+    DEBIAN_FRONTEND=noninteractive apt-get -y purge gpg dirmngr gpg-agent && \
     apt-get -y autoremove && \
     apt-get -y clean && \
     rm -rf /var/lib/apt/lists/*
@@ -99,9 +99,9 @@ RUN set -eux && \
     dpkg-reconfigure locales && \
     find /usr/share/zabbix/locale -name '*.po' | xargs rm -f && \
     find /usr/share/zabbix/locale -name '*.sh' | xargs rm -f && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/nginx/ /etc/php/7.2/fpm/php-fpm.conf /etc/php/7.2/fpm/pool.d/ && \
     chgrp -R 0 /etc/nginx/ /etc/php/7.2/fpm/php-fpm.conf /etc/php/7.2/fpm/pool.d/ && \
     chmod -R g=u /etc/nginx/ /etc/php/7.2/fpm/php-fpm.conf /etc/php/7.2/fpm/pool.d/ && \
diff --git a/web-nginx-mysql/ubuntu/docker-entrypoint.sh b/web-nginx-mysql/ubuntu/docker-entrypoint.sh
index 1f45196f9..04296446c 100755
--- a/web-nginx-mysql/ubuntu/docker-entrypoint.sh
+++ b/web-nginx-mysql/ubuntu/docker-entrypoint.sh
@@ -225,8 +225,6 @@ prepare_web_server() {
     else
         echo "**** Impossible to enable SSL support for Nginx. Certificates are missed."
     fi
-
-    ln -sf /dev/fd/2 /var/log/nginx/error.log
 }
 
 clear_deploy() {
@@ -279,7 +277,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-nginx-pgsql/alpine/Dockerfile b/web-nginx-pgsql/alpine/Dockerfile
index 9c4857dff..9c0dc2230 100644
--- a/web-nginx-pgsql/alpine/Dockerfile
+++ b/web-nginx-pgsql/alpine/Dockerfile
@@ -43,6 +43,7 @@ RUN set -eux && \
             supervisor && \
     rm -rf /etc/php7/php-fpm.d/www.conf && \
     rm -f /etc/nginx/conf.d/*.conf && \
+    ln -sf /dev/fd/2 /var/lib/nginx/logs/error.log && \
     rm -rf /var/cache/apk/*
 
 ARG MAJOR_VERSION=5.0
@@ -72,15 +73,15 @@ RUN set -eux && \
     rm -rf tests && \
     ./locale/make_mo.sh && \
     ln -s "/etc/zabbix/web/zabbix.conf.php" "/usr/share/zabbix/conf/zabbix.conf.php" && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/nginx/ /etc/php7/php-fpm.d/ /etc/php7/php-fpm.conf && \
     chgrp -R 0 /etc/nginx/ /etc/php7/php-fpm.d/ /etc/php7/php-fpm.conf && \
     chmod -R g=u /etc/nginx/ /etc/php7/php-fpm.d/ /etc/php7/php-fpm.conf && \
-    chown --quiet -R zabbix:root /var/lib/php/session/ && \
-    chgrp -R 0 /var/lib/php/session/ && \
-    chmod -R g=u /var/lib/php/session/ && \
+    chown --quiet -R zabbix:root /var/lib/php/session/ /var/lib/nginx/ && \
+    chgrp -R 0 /var/lib/php/session/ /var/lib/nginx/ && \
+    chmod -R g=u /var/lib/php/session/ /var/lib/nginx/ && \
     apk del --purge --no-network \
             build-dependencies && \
     rm -rf /var/cache/apk/*
diff --git a/web-nginx-pgsql/alpine/docker-entrypoint.sh b/web-nginx-pgsql/alpine/docker-entrypoint.sh
index 5a5d29530..3b127c1af 100755
--- a/web-nginx-pgsql/alpine/docker-entrypoint.sh
+++ b/web-nginx-pgsql/alpine/docker-entrypoint.sh
@@ -225,8 +225,6 @@ prepare_web_server() {
     else
         echo "**** Impossible to enable SSL support for Nginx. Certificates are missed."
     fi
-
-    ln -sf /dev/fd/2 /var/log/nginx/error.log
 }
 
 clear_deploy() {
@@ -283,7 +281,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-nginx-pgsql/centos/Dockerfile b/web-nginx-pgsql/centos/Dockerfile
index 07d359169..7eaea6a94 100644
--- a/web-nginx-pgsql/centos/Dockerfile
+++ b/web-nginx-pgsql/centos/Dockerfile
@@ -71,9 +71,9 @@ RUN set -eux && \
     cat /usr/share/zabbix/include/locales.inc.php | grep display | grep true | awk '{$1=$1};1' | \
                 cut -d"'" -f 2 | sort | \
                 xargs -I '{}' bash -c 'echo "{}" && localedef -c -i {} -f UTF-8 {}.UTF-8 2>/dev/null' && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ /usr/share/zabbix/modules/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/nginx/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
     chgrp -R 0 /etc/nginx/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
     chmod -R g=u /etc/nginx/ /etc/php-fpm.d/ /etc/php-fpm.conf && \
diff --git a/web-nginx-pgsql/centos/docker-entrypoint.sh b/web-nginx-pgsql/centos/docker-entrypoint.sh
index 332ba0e78..0d09d1a05 100755
--- a/web-nginx-pgsql/centos/docker-entrypoint.sh
+++ b/web-nginx-pgsql/centos/docker-entrypoint.sh
@@ -225,8 +225,6 @@ prepare_web_server() {
     else
         echo "**** Impossible to enable SSL support for Nginx. Certificates are missed."
     fi
-
-    ln -sf /dev/fd/2 /var/log/nginx/error.log
 }
 
 clear_deploy() {
@@ -283,7 +281,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {
diff --git a/web-nginx-pgsql/ubuntu/Dockerfile b/web-nginx-pgsql/ubuntu/Dockerfile
index c8c9db5ea..e48efa82f 100644
--- a/web-nginx-pgsql/ubuntu/Dockerfile
+++ b/web-nginx-pgsql/ubuntu/Dockerfile
@@ -99,9 +99,9 @@ RUN set -eux && \
     dpkg-reconfigure locales && \
     find /usr/share/zabbix/locale -name '*.po' | xargs rm -f && \
     find /usr/share/zabbix/locale -name '*.sh' | xargs rm -f && \
-    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/conf/ && \
-    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/conf/ && \
-    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/conf/ && \
+    chown --quiet -R zabbix:root /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chgrp -R 0 /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
+    chmod -R g=u /etc/zabbix/ /usr/share/zabbix/include/defines.inc.php /usr/share/zabbix/modules/ && \
     chown --quiet -R zabbix:root /etc/nginx/ /etc/php/7.2/fpm/php-fpm.conf /etc/php/7.2/fpm/pool.d/ && \
     chgrp -R 0 /etc/nginx/ /etc/php/7.2/fpm/php-fpm.conf /etc/php/7.2/fpm/pool.d/ && \
     chmod -R g=u /etc/nginx/ /etc/php/7.2/fpm/php-fpm.conf /etc/php/7.2/fpm/pool.d/ && \
diff --git a/web-nginx-pgsql/ubuntu/docker-entrypoint.sh b/web-nginx-pgsql/ubuntu/docker-entrypoint.sh
index 7d28224bc..10a744816 100755
--- a/web-nginx-pgsql/ubuntu/docker-entrypoint.sh
+++ b/web-nginx-pgsql/ubuntu/docker-entrypoint.sh
@@ -225,8 +225,6 @@ prepare_web_server() {
     else
         echo "**** Impossible to enable SSL support for Nginx. Certificates are missed."
     fi
-
-    ln -sf /dev/fd/2 /var/log/nginx/error.log
 }
 
 clear_deploy() {
@@ -279,7 +277,11 @@ prepare_zbx_web_config() {
         -e "s/{ZBX_HISTORYSTORAGETYPES}/$history_storage_types/g" \
     "$ZBX_WEB_CONFIG"
 
-    [ -n "${ZBX_SESSION_NAME}" ] && sed -i "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "$ZBX_WWW_ROOT/include/defines.inc.php"
+    if [ -n "${ZBX_SESSION_NAME}" ]; then
+        cp "$ZBX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp"
+        sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZBX_WWW_ROOT/include/defines.inc.php"
+        rm -f "/tmp/defines.inc.php_tmp"
+    fi
 }
 
 prepare_web() {