Add Dockerfiles for Ubuntu (#20196)

* Build: Add /Dockerfile.ubuntu
* Build: Add packaging/docker/Dockerfile.ubuntu
* Build: Add grafana-docker-ubuntu-pr CircleCI job
* Build: Add CircleCI jobs for building master/release Ubuntu based Docker images

packaging/docker/build-deploy.sh

@@ -1,12 +1,32 @@
 #!/bin/sh
 set -e
 
+OPT=""
+UBUNTU_BASE=0
+
+while [ "$1" != "" ]; do
+  case "$1" in
+    "--ubuntu")
+      OPT="${OPT} --ubuntu"
+      UBUNTU_BASE=1
+      echo "Ubuntu base image enabled"
+      shift
+      ;;
+    * )
+      # unknown param causes args to be passed through to $@
+      break
+      ;;
+  esac
+done
+
 _grafana_version=$1
-./build.sh "$_grafana_version"
+./build.sh ${OPT} "$_grafana_version"
 docker login -u "$DOCKER_USER" -p "$DOCKER_PASS"
 
-./push_to_docker_hub.sh "$_grafana_version"
+./push_to_docker_hub.sh ${OPT} "$_grafana_version"
 
-if echo "$_grafana_version" | grep -q "^master-"; then
-  ./deploy_to_k8s.sh "grafana/grafana-dev:$_grafana_version"
+if [ ${UBUNTU_BASE} = "0" ]; then
+  if echo "$_grafana_version" | grep -q "^master-"; then
+    ./deploy_to_k8s.sh "grafana/grafana-dev:$_grafana_version"
+  fi
 fi