postfixadmin-docker/Dockerfile

FROM docker.io/library/php:7.4-apache

# POSTFIXADMIN VERSION
ARG POSTFIXADMIN_VERSION

# APACHE
ENV APACHE_DOCUMENT_ROOT /var/www/html/public

RUN set -eu; \
  sed --in-place --regexp-extended 's#/var/www/html#${APACHE_DOCUMENT_ROOT}#g' /etc/apache2/sites-available/*.conf; \
  sed --in-place --regexp-extended 's#/var/www/#${APACHE_DOCUMENT_ROOT}#g' /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf

# DEFAULT DATABASE SETTINGS
ENV POSTFIXADMIN_DATABASE_TYPE=sqlite \
    POSTFIXADMIN_DATABASE_HOST="" \
    POSTFIXADMIN_DATABASE_PORT="" \
    POSTFIXADMIN_DATABASE_USER="" \
    POSTFIXADMIN_DATABASE_PASSWORD="" \
    POSTFIXADMIN_SMTP_SERVER="localhost" \
    POSTFIXADMIN_SMTP_PORT="25" \
    POSTFIXADMIN_ENCRYPT="md5crypt"

# docker-entrypoint.sh dependencies
RUN set -eux; \
  apt-get update; \
  apt-get install --yes --no-install-recommends gosu apache2-utils; \
  rm --recursive --force /var/lib/apt/lists/*

# Install required PHP extensions
RUN set -ex; \
    savedAptMark="$(apt-mark showmanual)"; \
    apt-get update; \
    apt-get install --yes --no-install-recommends \
      libc-client2007e-dev \
      libkrb5-dev \
      libpq-dev \
      libsqlite3-dev; \
    docker-php-ext-configure imap --with-imap-ssl --with-kerberos; \
    docker-php-ext-install -j "$(nproc)" \
      imap \
      pdo_mysql \
      pdo_pgsql \
      pdo_sqlite \
      pgsql; \
    apt-mark auto '.*' > /dev/null; \
    apt-mark manual $savedAptMark; \
      ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
      | awk '/=>/ { print $3 }' \
      | sort -u \
      | xargs -r dpkg-query -S \
      | cut -d: -f1 \
      | sort -u \
      | xargs -rt apt-mark manual; \
    if [ ! -z ${POSTFIXADMIN_VERSION} ]; then \
      curl --fail --silent --show-error --location "https://github.com/postfixadmin/postfixadmin/archive/postfixadmin-${POSTFIXADMIN_VERSION}.tar.gz" --output postfixadmin.tar.gz; \
      tar --extract --file postfixadmin.tar.gz --directory /var/www/html --strip-components=1; \
      rm postfixadmin.tar.gz; \
    else \
      apt-get install --yes git; \
      git clone https://github.com/postfixadmin/postfixadmin.git /var/www/html; \
    fi; \
    apt-get purge --yes --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
    rm --recursive --force /var/lib/apt/lists/*

RUN mkdir --parents /var/www/html/templates_c; \
    chown --recursive www-data:www-data /var/www/html

COPY entrypoint.sh /usr/local/bin/

ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
CMD ["apache2-foreground"]