Add initial Dockerfile and docker-compose for Znuny rel-7_1_7 container deployment

Dockerfile

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+FROM ubuntu:jammy
+LABEL org.opencontainers.image.authors="Bohdan Klymonchuk" \
+      org.opencontainers.image.title="znuny" \
+      org.opencontainers.image.description="Based on https://doc.znuny.org/"
+
+# Znuny version and environment
+ARG ZNUNY_VERSION=7.1.7
+ARG ZNUNY_USER=znuny
+ENV ZNUNY_HOME=/opt/znuny-${ZNUNY_VERSION} \
+    PATH=$PATH:/opt/znuny-${ZNUNY_VERSION}/bin
+
+# Install all system packages and Perl modules, then clean caches
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y \
+      wget apache2 mariadb-client cpanminus cron vim \
+      libdbd-odbc-perl libapache2-mod-perl2 \
+      libdbd-mysql-perl libtimedate-perl libnet-dns-perl libnet-ldap-perl \
+      libio-socket-ssl-perl libpdf-api2-perl libsoap-lite-perl \
+      libtext-csv-xs-perl libjson-xs-perl libapache-dbi-perl \
+      libxml-libxml-perl libxml-libxslt-perl libyaml-perl \
+      libarchive-zip-perl libcrypt-eksblowfish-perl libencode-hanextra-perl \
+      libmail-imapclient-perl libtemplate-perl libdatetime-perl libmoo-perl \
+      bash-completion libyaml-libyaml-perl libjavascript-minifier-xs-perl \
+      libcss-minifier-xs-perl libauthen-sasl-perl libauthen-ntlm-perl \
+      libdbd-pg-perl libcrypt-jwt-perl libcrypt-openssl-x509-perl \
+      libhash-merge-perl libical-parser-perl libspreadsheet-xlsx-perl \
+      nullmailer uuid-dev build-essential && \
+    echo "smtp.unibas.ch" > /etc/nullmailer/remotes && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+RUN cpanm --notest --force Jq Data::UUID && \
+    apt-get purge -y uuid-dev build-essential && \
+    apt-get autoremove -y && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+WORKDIR ${ZNUNY_HOME}
+COPY . .
+
+# Create ZNUNY user, configure and set permissions
+RUN useradd -d ${ZNUNY_HOME} -c "Znuny user" \
+      -g www-data -s /bin/bash -M -N ${ZNUNY_USER} && \
+    cp Kernel/Config.pm.dist Kernel/Config.pm && \
+    sed -i "s/\$Self->{DatabaseHost} = '127\.0\.0\.1';/\$Self->{DatabaseHost} = 'znuny_db';/" Kernel/Config.pm && \
+    bin/znuny.SetPermissions.pl --znuny-user ${ZNUNY_USER}
+
+# Rename default cron jobs
+RUN su - znuny -c "cd ${ZNUNY_HOME}/var/cron && for f in *.dist; do cp \$f \$(basename \$f .dist); done "
+
+# Configure Apache for Znuny
+RUN a2dismod mpm_event && \
+    a2enmod mpm_prefork perl headers deflate filter cgi rewrite && \
+    ln -s ${ZNUNY_HOME}/scripts/apache2-httpd.include.conf /etc/apache2/conf-available/zzz_znuny.conf && \
+    a2enconf zzz_znuny && \
+    echo "RedirectMatch ^/$ /znuny/index.pl" >> /etc/apache2/apache2.conf
+
+# Fix file permissions
+RUN find ${ZNUNY_HOME}/var/httpd -type d -exec chmod 775 {} \; && \
+    find ${ZNUNY_HOME}/var/httpd -type f -exec chmod 664 {} \; && \
+    chown -R ${ZNUNY_USER}:www-data /tmp
+
+RUN ln -s ${ZNUNY_HOME} /opt/znuny && \
+    ln -s ${ZNUNY_HOME} /opt/otrs && \
+    mv ${ZNUNY_HOME}/Kernel/System/Ticket/CustomExample.pm ${ZNUNY_HOME}/Kernel/System/Ticket/Custom.pm
+
+EXPOSE 80
+
+# Start services and launch Apache in foreground
+ENTRYPOINT ["/bin/bash", "-c"]
+CMD ["service nullmailer start && service cron start && source /etc/apache2/envvars && apache2 -DFOREGROUND"]

docker-compose.yml

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+networks:
+  znuny-net:
+    driver: bridge
+
+volumes:
+  znuny_db_data:
+  znuny_httpd_data:
+
+services:
+  znuny:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: znuny:${ZNUNY_VERSION:-7.1.7}
+    container_name: znuny_httpd
+    mem_limit: ${ZNUNY_MEMLIMIT:-2048m}
+    privileged: true
+    depends_on:
+      - mariadb
+    volumes:
+      - znuny_httpd_data:/opt/znuny
+    restart: ${RESTART:-unless-stopped}
+    ports:
+      - "${HTTP_PORT:-8080}:80"
+    networks:
+      - znuny-net
+    labels:
+      org.label-schema.group: "znuny"
+
+  mariadb:
+    image: mariadb:${MARIADB_VERSION:-11.4.7}
+    container_name: znuny_db
+    mem_limit: ${ZNUNY_DB_MEMLIMIT:-2048m}
+    environment:
+      MYSQL_ROOT_PASSWORD: ${ROOT_PASS:-root-pass}
+      MYSQL_DATABASE: ${DATA_BASE_NAME:-znuny}
+      MYSQL_USER: ${DB_USER:-znuny}
+      MYSQL_PASSWORD: ${DB_USER_PASS:-some-pass}
+    volumes:
+      - znuny_db_data:/var/lib/mysql
+    restart: ${RESTART:-unless-stopped}
+    ports:
+      - "${DB_PORT:-3306}:3306"
+    networks:
+      - znuny-net
+    command: [
+      "--max_allowed_packet=256M",
+      "--innodb_log_file_size=512M"
+    ]
+    labels:
+      org.label-schema.group: "znuny"