Added gitlab-ci

.gitlab-ci.yml

@@ -0,0 +1,26 @@
+variables:
+  IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
+  IMAGE_TAG_RELEASE: $CI_REGISTRY_IMAGE:latest
+
+stages:
+  - build
+  - release
+
+build:
+  image: docker:20.10.16
+  stage: build
+  services:
+    - docker:20.10.16-dind
+  script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker build -t $IMAGE_TAG .
+    - docker push $IMAGE_TAG
+
+release-image:
+  stage: release
+  script:
+    - docker pull $IMAGE_TAG
+    - docker tag $IMAGE_TAG $IMAGE_TAG_RELEASE
+    - docker push $IMAGE_TAG_RELEASE
+  only:
+    - master