pipeline multiple updates

• updated workflow rules
• updated job names
• updated container versions
• added a template for gke-initialization

.gitlab-ci.yml

@@ -35,15 +35,14 @@ test-image:
   services:
     - name: docker:${DOCKER_VERSION}-dind
   script:
-    - export MONGO_CONTAINER_NAME=mongo-container
-    - docker run -p 27017:27017 -d --name $MONGO_CONTAINER_NAME mongo:${MONGO_VERSION}
+    - docker run -p 27017:27017 -d --name mongo-container --rm mongo:${MONGO_VERSION}
     - docker build
       --tag "${CONTAINER_TAG}-test"
       --target=test
       "./app"
   after_script:
-    - docker stop $MONGO_CONTAINER_NAME | xargs docker rm
-    - docker image rm --force mongo:${MONGO_VERSION}
+    - docker stop mongo-container
+    - docker images -a | grep "mongo" | awk '{print $3}' | xargs docker rmi --force
     - docker image rm --force "${CONTAINER_TAG}-test"
 
 build-image: