roundcube-docker/Dockerfile

FROM php:7.4-apache
LABEL maintainer="Torben Nehmer <torben@nehmer.net>"

RUN set -ex; \
	apt-get update; \
	\
	savedAptMark="$(apt-mark showmanual)"; \
	\
	apt-get install -y --no-install-recommends \
		libfreetype6-dev \
		libicu-dev \
		libjpeg62-turbo-dev \
		libldap2-dev \
		libpng-dev \
		libpq-dev \
		libsqlite3-dev \
		libzip-dev \
		# ISPConfig requirement
		libxml2-dev \
	; \
	\
	debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
	docker-php-ext-configure gd ; \
	docker-php-ext-configure ldap --with-libdir="lib/$debMultiarch"; \
	docker-php-ext-install \
		exif \
		gd \
		intl \
		ldap \
		pdo_mysql \
		pdo_pgsql \
		pdo_sqlite \
		zip \
		# ISPConfig requirement
		soap \
	; \
	\
	# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
	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; \
	\
	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
	apt-get clean ;\
	rm -rf /var/lib/apt/lists/* ;\
	\
	# enable mod_rewrite
	a2enmod rewrite 

# expose these volumes
VOLUME /var/roundcube/config

# Define Roundcubemail version
ENV ROUNDCUBEMAIL_VERSION 1.4.8

# Set the entry point
ENTRYPOINT ["/docker-entrypoint.sh"]
CMD ["apache2-foreground"]

# Finally, publish the rootfs file into the container
# This is done as last step to make docker build caching more efficient.
ADD rootfs.tar.gz /