Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -1,10 +1,42 @@
-build:
-  image: docker:latest
-  script:
-  - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
-  - docker build --pull -t $CI_REGISTRY_IMAGE .
-  - docker push $CI_REGISTRY_IMAGE
-  services:
+image: docker:latest
+
+services:
   - docker:dind
+
+stages:
+  - build
+  - push
+
+before_script:
+  - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
+
+Build:
+  script:
+    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
+    - docker build --pull -t $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA .
+    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
+  stage: build
   tags:
-  - docker
+  - docker
+
+Push latest:
+  only:
+    - master
+  script:
+    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
+    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:latest
+    - docker push $CI_REGISTRY_IMAGE:latest
+  stage: push
+  tags:
+  - docker
+
+Push tag:
+  only:
+    - tags
+  script:
+    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
+    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
+    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
+  stage: push
+  tags:
+  - docker