Removed root group for zabbix user in all images. Using nmap without sudo permissions

Dockerfiles/proxy-sqlite3/centos/Dockerfile

@@ -13,7 +13,8 @@ ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
 
 ENV TERM=xterm \
     ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
-    MIBDIRS=/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL
+    MIBDIRS=/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
+    NMAP_PRIVILEGED=""
 
 LABEL org.opencontainers.image.authors="Alexey Pustovalov <alexey.pustovalov@zabbix.com>" \
       org.opencontainers.image.description="Zabbix proxy with SQLite3 database support" \
@@ -36,7 +37,6 @@ RUN set -eux && \
     REPOLIST="baseos,appstream,epel" && \
     INSTALL_PKGS="libevent \
             tini \
-            sudo \
             traceroute \
             nmap \
             libssh \
@@ -67,12 +67,12 @@ RUN set -eux && \
             --system \
             --comment "Zabbix monitoring system" \
             -g zabbix \
-            -G root \
             --uid 1997 \
             --shell /sbin/nologin \
             --home-dir /var/lib/zabbix/ \
         zabbix && \
-    echo "zabbix ALL=(root) NOPASSWD: /usr/bin/nmap" >> /etc/sudoers.d/zabbix && \
+    chgrp zabbix /usr/bin/nmap && \
+    setcap cap_net_raw+eip /usr/bin/nmap && \
     mkdir -p /etc/zabbix && \
     mkdir -p /var/lib/zabbix && \
     mkdir -p /var/lib/zabbix/db_data && \