Use CI on all branches

.gitlab-ci.yml

 variables:
-  CONTAINER_IMAGE: "gitlab.inf.unibz.it:4567/commul/merlin-platform/www/master"
+  CONTAINER_IMAGE: "gitlab.inf.unibz.it:4567/commul/merlin-platform/www"
   DOCKER_BUILDER_IMAGE: "docker:19.03.1"
   DOCKER_TLS_CERTDIR: "" # See https://gitlab.com/gitlab-org/gitlab-runner/issues/4501
   KUBECTL: "https://storage.googleapis.com/kubernetes-release/release/v1.8.10/bin/linux/amd64/kubectl"
@@ -21,10 +21,10 @@ build:
   script:
     - docker build --rm --no-cache --tag=${CONTAINER_IMAGE}:${CI_COMMIT_SHA} .
     - docker push ${CONTAINER_IMAGE}:${CI_COMMIT_SHA}
-    - docker tag ${CONTAINER_IMAGE}:${CI_COMMIT_SHA} ${CONTAINER_IMAGE}:staging
-    - docker push ${CONTAINER_IMAGE}:staging
+    - docker tag ${CONTAINER_IMAGE}:${CI_COMMIT_SHA} ${CONTAINER_IMAGE}:latest
+    - docker push ${CONTAINER_IMAGE}:latest
   only:
-   - master
+    - branches
 
 deploy_staging:
   stage: deploy
@@ -42,4 +42,4 @@ deploy_staging:
     - docker pull ${CONTAINER_IMAGE}:${CI_COMMIT_SHA}
     - kubectl --namespace kommul-dev set image deployment/merlin browser=${CONTAINER_IMAGE}:${CI_COMMIT_SHA}
   only:
-    - master
+    - branches

kustomize/overlays/staging/kustomization.yaml

@@ -21,7 +21,7 @@ namespace: kommul-dev
 
 images:
   - name: WEBSERVER
-    newName: gitlab.inf.unibz.it:4567/commul/merlin-platform/www/master:445bc35dde4520cab61a36c793c7c5a626f43e62
+    newName: gitlab.inf.unibz.it:4567/commul/merlin-platform/www:445bc35dde4520cab61a36c793c7c5a626f43e62
 
 patchesJSON6902:
   - target: