ARG	REGISTRY=docker.io
ARG	UPSTREAM_DISTRO=debian:stretch
FROM	${REGISTRY}/${UPSTREAM_DISTRO}
# Arguments used after FROM must be specified again
ARG	OSMOCOM_REPO_MIRROR="http://download.opensuse.org"
ARG	DISTRO

MAINTAINER Harald Welte <laforge@gnumonks.org>

ARG	OSMOCOM_REPO="$OSMOCOM_REPO_MIRROR/repositories/network:/osmocom:/latest/Debian_9.0/"

COPY	Release.key /tmp/Release.key

RUN	apt-get update && \
	apt-get install -y --no-install-recommends \
		gnupg

RUN	case "$DISTRO" in \
	debian*) \
		apt-key add /tmp/Release.key && \
		rm /tmp/Release.key && \
		echo "deb " $OSMOCOM_REPO " ./" > /etc/apt/sources.list.d/osmocom-latest.list \
		;; \
	esac

# we need to add this to invalidate the cache once the repository is updated.
# unfortunately Dockerfiles don't support a conditional ARG, so we need to add both DPKG + RPM
ADD	$OSMOCOM_REPO/Release /tmp/Release
ADD	$OSMOCOM_REPO_MIRROR/repositories/network:/osmocom:/latest/CentOS_8/repodata/repomd.xml /tmp/repomd.xml
RUN	case "$DISTRO" in \
	debian*) \
		apt-get update && \
		apt-get install -y --no-install-recommends \
			osmo-gbproxy \
			telnet \
		&& \
		apt-get clean \
		;; \
	centos*) \
		dnf install -y \
			osmo-gbproxy \
			telnet \
		;; \
	*) \
		echo "Unsupported distribution $DISTRO" \
		exit 23 \
		;; \
	esac

WORKDIR	/data

VOLUME	/data

COPY	osmo-gbproxy.cfg 	/data/osmo-gbproxy.cfg

# work-around for stupid docker not being able to properly deal with host netdevices or start
# containers in pre-existing netns
COPY	pipework		/usr/bin/pipework
COPY	docker-entrypoint.sh	/docker-entrypoint.sh

CMD	["/docker-entrypoint.sh"]

EXPOSE	23000/udp 4246/tcp 4263/tcp