Fix push docker hub

gitlabci/docker-hub.yml

@@ -15,6 +15,7 @@ variables:
   CONTAINER_CLIENT_IMAGE: debian:buster      
   CONTAINER_TEST_NAME: squid
   CONTAINER_BUILD_NOPROD_NAME: $HUB_REGISTRY_IMAGE:build-noprod
+  CONTAINER_BUILD_PROD_NAME: $HUB_REGISTRY_IMAGE:$SQUID_VERSION
   SQUID_VERSION: '"$SQUID_VERSION"'
 
 .services:
@@ -39,11 +40,8 @@ push-docker-hub:
     - docker login -u "$DOCKER_HUB_USER" -p "$DOCKER_HUB_TOKEN" $DOCKER_HUB_REGISTRY
   script:
     - docker pull $CONTAINER_BUILD_NOPROD_NAME
-    - export VERSION=$(docker run -i --entrypoint "/bin/sh" $CONTAINER_BUILD_NOPROD_NAME -c env | grep EN_SQUID_VERSION | cut -d'=' -f2)
-    - docker tag $CONTAINER_BUILD_NOPROD_NAME $HUB_REGISTRY_IMAGE:$VERSION
-    - docker push $HUB_REGISTRY_IMAGE:$VERSION
+    - docker tag $CONTAINER_BUILD_NOPROD_NAME  $CONTAINER_BUILD_PROD_NAME 
+    - docker push $CONTAINER_BUILD_PROD_NAME
   variables:
     GIT_STRATEGY: none
-    # Needed for escaping $"
-    SQUID_VERSION: '"$SQUID_VERSION"'