QUA-958: Push images to Dockerhub instead of GCR (#379)

* Push images to Dockerhub instead of GCR

* change make release image name

* override RELEASE_TAG on empty string

.circleci/config.yml

@@ -18,15 +18,20 @@ jobs:
       - checkout
       - setup_remote_docker:
           docker_layer_caching: true
-      - run: docker login -u _json_key -p "$GCR_JSON_KEY" us.gcr.io
-      - run: make release RELEASE_TAG="b$CIRCLE_BUILD_NUM"
+      - run: echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
+      - run:
+          name: Push image to Dockerhub
+          command: |
+            make release RELEASE_TAG="b$CIRCLE_BUILD_NUM"
+            make release RELEASE_TAG="$(echo $CIRCLE_BRANCH | grep -oP 'channel/\K[\w\-]+')"
 
 workflows:
   version: 2
   build_deploy:
     jobs:
       - build_and_test
       - release_images:
+          context: Quality
           requires:
             - build_and_test
           filters:

Makefile

@@ -1,6 +1,11 @@
 .PHONY: image test citest release
 
 IMAGE_NAME ?= codeclimate/codeclimate-duplication
+RELEASE_REGISTRY ?= codeclimate
+
+ifndef RELEASE_TAG
+override RELEASE_TAG = latest
+endif
 
 image:
 	docker build --rm -t $(IMAGE_NAME) .
@@ -17,7 +22,6 @@ bundle:
 	  --volume $(PWD):/usr/src/app \
 	  $(IMAGE_NAME) -c "bundle $(BUNDLE_ARGS)"
 
-release: image
-	docker tag $(IMAGE_NAME) \
-		us.gcr.io/code_climate/codeclimate-duplication:$(RELEASE_TAG)
-	docker push us.gcr.io/code_climate/codeclimate-duplication:$(RELEASE_TAG)
+release:
+	docker tag $(IMAGE_NAME) $(RELEASE_REGISTRY)/codeclimate-duplication:$(RELEASE_TAG)
+	docker push $(RELEASE_REGISTRY)/codeclimate-duplication:$(RELEASE_TAG)