build container on release branches (#377) (#378)

Signed-off-by: David Chung <[email protected]>

Author: David Chung

circle.yml

@@ -41,8 +41,14 @@ test:
     - cd $WORKDIR && bash <(curl -s https://codecov.io/bash)
 
 deployment:
+  release:
+    branch: /release-.*/
+    commands:
+      - docker login -e $DOCKER_HUB_EMAIL -u $DOCKER_HUB_USER -p $DOCKER_HUB_PASSWD
+      - DOCKER_PUSH=true DOCKER_TAG_LATEST=false DOCKER_TAG=$(echo $CIRCLE_BRANCH | awk -F - '{print $2}') DOCKER_BUILD_FLAGS="--rm=false" make build-docker
   docker:
     branch: master
     commands:
       - docker login -e $DOCKER_HUB_EMAIL -u $DOCKER_HUB_USER -p $DOCKER_HUB_PASSWD
       - DOCKER_PUSH=true DOCKER_TAG_LATEST=true DOCKER_TAG="master-$CIRCLE_BUILD_NUM" DOCKER_BUILD_FLAGS="--rm=false" make build-docker
+