docker/php7.3/fpm/Dockerfile

FROM php:7.3-fpm
LABEL maintainer="Harald Leithner <harald.leithner@community.joomla.org> (@HLeithner)"

# Disable remote database security requirements.
ENV JOOMLA_INSTALLATION_DISABLE_LOCALHOST_CHECK=1

# Install PHP extensions
RUN set -ex; \
	\
	savedAptMark="$(apt-mark showmanual)"; \
	\
	apt-get update; \
	apt-get install -y --no-install-recommends \
		libbz2-dev \
		libgmp-dev \
		libjpeg-dev \
		libldap2-dev \
		libmcrypt-dev \
		libmemcached-dev \
		libpng-dev \
		libpq-dev \
		libzip-dev \
	; \
	\
	docker-php-ext-configure gd --with-jpeg-dir=/usr --with-png-dir=/usr; \
	debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
	docker-php-ext-configure ldap --with-libdir="lib/$debMultiarch"; \
	docker-php-ext-install -j "$(nproc)" \
		bz2 \
		gd \
		gmp \
		ldap \
		mysqli \
		pdo_mysql \
		pdo_pgsql \
		pgsql \
		zip \
	; \
	\
# pecl will claim success even if one install fails, so we need to perform each install separately
	pecl install APCu-5.1.19; \
	pecl install memcached-3.1.5; \
	pecl install redis-4.3.0; \
	\
	docker-php-ext-enable \
		apcu \
		memcached \
		redis \
	; \
	\
# 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; \
	rm -rf /var/lib/apt/lists/*

VOLUME /var/www/html

# Define Joomla version and expected SHA512 signature
ENV JOOMLA_VERSION 3.9.25
ENV JOOMLA_SHA512 83fc90cb09d710e30dc8e8f50c4e6074ab74fb6a431a851b2567e30273e2a27686d9702cc0cdbae7dc2db09efa0081f8418064b691de43fee1af15f7a195fa25

# Download package and extract to web volume
RUN set -ex; \
	curl -o joomla.tar.bz2 -SL https://github.com/joomla/joomla-cms/releases/download/${JOOMLA_VERSION}/Joomla_${JOOMLA_VERSION}-Stable-Full_Package.tar.bz2; \
	echo "$JOOMLA_SHA512 *joomla.tar.bz2" | sha512sum -c -; \
	mkdir /usr/src/joomla; \
	tar -xf joomla.tar.bz2 -C /usr/src/joomla; \
	rm joomla.tar.bz2; \
	chown -R www-data:www-data /usr/src/joomla

# Copy init scripts and custom .htaccess
COPY docker-entrypoint.sh /entrypoint.sh
COPY makedb.php /makedb.php

ENTRYPOINT ["/entrypoint.sh"]
CMD ["php-fpm"]