diff --git a/Dockerfile.template b/Dockerfile.template
new file mode 100644
index 0000000..a37897e
--- /dev/null
+++ b/Dockerfile.template
@@ -0,0 +1,168 @@
+{{
+	def is_alpine:
+		env.variant | index("alpine")
+-}}
+# from https://downloads.joomla.org/technical-requirements
+FROM php:{{ env.phpVersion }}-{{ env.variant }}
+LABEL maintainer="{{ env.joomlaMaintainers }}"
+
+# Disable remote database security requirements.
+ENV JOOMLA_INSTALLATION_DISABLE_LOCALHOST_CHECK=1
+{{ if is_alpine then ( -}}
+# entrypoint.sh dependencies
+RUN apk add --no-cache \
+	bash
+{{ ) else "" end -}}
+{{ if env.variant == "apache" then ( -}}
+# Enable Apache Rewrite Module
+RUN a2enmod rewrite\
+{{ ) else "" end -}}
+# Install the PHP extensions
+RUN set -ex; \
+{{ if is_alpine then ( -}}
+	\
+	apk add --no-cache --virtual .build-deps \
+		$PHPIZE_DEPS \
+		autoconf \
+		bzip2-dev \
+		gmp-dev \
+		libjpeg-turbo-dev \
+		libmcrypt-dev \
+		libmemcached-dev \
+		libpng-dev \
+		libzip-dev \
+		openldap-dev \
+		pcre-dev \
+		postgresql-dev \
+	; \
+	\
+{{ if env.phpVersion == "7.3" then ( -}}
+	docker-php-ext-configure gd --with-jpeg-dir=/usr --with-png-dir=/usr; \
+{{ ) else ( -}}
+	docker-php-ext-configure gd --with-jpeg; \
+{{ ) end -}}
+	docker-php-ext-configure ldap; \
+	docker-php-ext-install -j "$(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-{{ env.pecl_APCu }}; \
+	pecl install mcrypt-{{ env.pecl_mcrypt }}; \
+	pecl install memcached-{{ env.pecl_memcached }}; \
+	pecl install redis-{{ env.pecl_redis }}; \
+	\
+	docker-php-ext-enable \
+		apcu \
+		mcrypt \
+		memcached \
+		redis \
+	; \
+	rm -r /tmp/pear; \
+	\
+	runDeps="$( \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local/lib/php/extensions \
+		| tr ',' '\n' \
+		| sort -u \
+		| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+		)"; \
+	apk add --virtual .joomla-phpext-rundeps $runDeps; \
+	apk del .build-deps
+{{ ) else ( -}}
+	\
+	savedAptMark="$(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 \
+	; \
+	\
+{{ if env.phpVersion == "7.3" then ( -}}
+	docker-php-ext-configure gd --with-jpeg-dir=/usr --with-png-dir=/usr; \
+{{ ) else ( -}}
+	docker-php-ext-configure gd --with-jpeg; \
+{{ ) end -}}
+	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-{{ env.pecl_APCu }}; \
+	pecl install memcached-{{ env.pecl_memcached }}; \
+	pecl install redis-{{ env.pecl_redis }}; \
+	\
+	docker-php-ext-enable \
+		apcu \
+		memcached \
+		redis \
+	; \
+	rm -r /tmp/pear; \
+	\
+# 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 $3 }' \
+		| sort -u \
+		| xargs -r dpkg-query -S \
+		| cut -d: -f1 \
+		| sort -u \
+		| xargs -rt apt-mark manual; \
+	\
+	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+	rm -rf /var/lib/apt/lists/*
+{{ ) end -}}
+
+VOLUME /var/www/html
+
+# Define Joomla version and expected SHA512 signature
+ENV JOOMLA_VERSION {{ env.joomlaVersion }}
+ENV JOOMLA_SHA512 {{ env.joomlaSha512 }}
+
+# Download package and extract to web volume
+RUN set -ex; \
+	curl -o joomla.tar.bz2 -SL https://github.com/joomla/joomla-cms/releases/download/${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"]
+{{ if env.variant == "apache" then ( -}}
+CMD ["apache2-foreground"]
+{{ ) else ( }}
+CMD ["php-fpm"]
+{{ ) end -}}
+
+# vim:set ft=dockerfile: