FROM drupal:7
LABEL maintainer="Torben Nehmer <torben@nehmer.net>"

RUN set -ex; \
	apt-get update; \
	\
	apt-get install -y --no-install-recommends \
		ssmtp \
	; \
	\
	rm -rf /var/lib/apt/lists/* ;\
	apt-get clean

# 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 /