common: Automatize UPSTREAM_DISTRO name based on image name

Similar to what is already done with DISTRO, which points to given image
of ours based on name. This time we do the same with upstream images,
such as debian:stretch or centos:centos8.

This way, for instance calling docker_images_require
"osmo-bsc-latest-centos8" would try to build the
osmo-bsc-latest/Dockerfile file starting from a centos8 image.

Change-Id: I33cb21aa024396974559fd98f9f3c64e2c351eda

centos-repo-install-test/Dockerfile

@@ -1,6 +1,7 @@
 ARG	USER
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/centos:centos8
+ARG	UPSTREAM_DISTRO=centos:centos8
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 # dnf-utils: for repoquery
 RUN	dnf install -y \
@@ -9,4 +10,3 @@ RUN	dnf install -y \
 
 # Make additional development libraries available
 RUN	yum config-manager --set-enabled PowerTools
-

centos8-build/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/centos:centos8
+ARG	UPSTREAM_DISTRO=centos:centos8
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 # Let package metadata expire after 60 seconds instead of 48 hours
 RUN	echo "metadata_expire=60" >> /etc/dnf/dnf.conf && cat /etc/dnf/dnf.conf

debian-repo-install-test/Dockerfile

@@ -1,6 +1,7 @@
 ARG	USER
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 COPY	Release.key /tmp/Release.key
 

debian-stretch-build/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

debian-stretch-titan/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

jenkins-common.sh

@@ -12,10 +12,18 @@ docker_depends() {
 
 docker_distro_from_image_name() {
 	case "$1" in
-	osmo-*-centos8) echo "centos8"; ;;
+	osmo-*-centos8) echo "centos8" ;;
+	centos8-*) echo "centos8" ;;
 	*) echo "debian-stretch" ;;
 	esac
+}
 
+docker_upstream_distro_from_image_name() {
+	case "$1" in
+	osmo-*-centos8) echo "centos:centos8"; ;;
+	centos8-*) echo "centos:centos8" ;;
+	*) echo "debian:stretch" ;;
+	esac
 }
 
 docker_dir_from_image_name() {
@@ -27,15 +35,20 @@ docker_dir_from_image_name() {
 
 # Make sure required images are available and build them if necessary.
 # $*: image names (e.g. "debian-stretch-build", "osmo-mgw-master", "osmo-mgw-master-centos8")
-#	The images are automatically built from the Dockerfile of the subdir of the same name. If there is a
+#	The images are automatically built from the Dockerfile of the subdir of
-#	distribution name at the end of the image name (e.g. osmo-mgw-master-centos8), it gets removed from the subdir
+#	the same name. If there is a distribution name at the end of the image
-#	where the Dockerfile is taken from (e.g. osmo-mgw-master/Dockerfile) and DISTRO is passed accordingly
+#	name (e.g. osmo-mgw-master-centos8), it gets removed from the subdir
-#	(e.g. DISTRO=centos8). This allows one Dockerfile for multiple distributions, without duplicating configs for
+#	where the Dockerfile is taken from (e.g. osmo-mgw-master/Dockerfile)
-#	each distribution. Dependencies listed in docker_depends() are built automatically too.
+#	and UPSTREAM_DISTRO and DISTRO are passed accordingly (e.g.
+#	UPSTREAM_DISTRO=centos:centos8 DISTRO=centos8). This allows one
+#	Dockerfile for multiple distributions, without duplicating configs for
+#	each distribution. Dependencies listed in docker_depends() are built
+#	automatically too.
 docker_images_require() {
 	local i
 	local from_line
 	local pull_arg
+	local upstream_distro_arg
 	local distro_arg
 	local depends
 	local dir
@@ -49,6 +62,7 @@ docker_images_require() {
 
 		# Trigger image build (cache will be used when up-to-date)
 		if [ -z "$NO_DOCKER_IMAGE_BUILD" ]; then
+			upstream_distro_arg="$(docker_upstream_distro_from_image_name "$i")"
 			distro_arg="$(docker_distro_from_image_name "$i")"
 			dir="$(docker_dir_from_image_name "$i")"
 
@@ -62,6 +76,7 @@ docker_images_require() {
 			echo "Building image: $i (export NO_DOCKER_IMAGE_BUILD=1 to prevent this)"
 			make -C "../$dir" \
 				PULL="$pull_arg" \
+				UPSTREAM_DISTRO="$upstream_distro_arg" \
 				DISTRO="$distro_arg" \
 				IMAGE="$REPO_USER/$i" \
 				|| exit 1

make/Makefile

@@ -33,6 +33,7 @@ OSMO_SGSN_BRANCH?=master
 OSMO_SIP_BRANCH?=master
 OSMO_STP_BRANCH?=master
 PULL?=
+UPSTREAM_DISTRO?=debian:stretch
 DISTRO?=debian-stretch
 
 RELEASE_SUPPORT := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))/.make-release-support
@@ -61,6 +62,7 @@ docker-build: .release
 		--build-arg USER=$(USERNAME) \
 		--build-arg REGISTRY=$(REGISTRY_HOST) \
 		--build-arg OSMO_TTCN3_BRANCH=$(OSMO_TTCN3_BRANCH) \
+		--build-arg UPSTREAM_DISTRO=$(UPSTREAM_DISTRO) \
 		--build-arg DISTRO=$(DISTRO) \
 		--build-arg LIBOSMOCORE_BRANCH=$(LIBOSMOCORE_BRANCH) \
 		--build-arg OSMO_BB_BRANCH=$(OSMO_BB_BRANCH) \

osmo-bsc-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-bts-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-cn-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Daniel Willmann <dwillmann@sysmocom.de>
 

osmo-ggsn-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-hlr-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-hnbgw-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-mgw-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-msc-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-nitb-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-pcu-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-remsim-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-sgsn-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-sip-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 

osmo-stp-latest/Dockerfile

@@ -1,5 +1,6 @@
 ARG	REGISTRY=docker.io
-FROM	${REGISTRY}/debian:stretch
+ARG	UPSTREAM_DISTRO=debian:stretch
+FROM	${REGISTRY}/${UPSTREAM_DISTRO}
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>