Add gitlab CI

.gitlab-ci.yml

+services:
+  - docker:dind
+
+stages:
+  - build
+  - deploy
+
+build:
+  stage: build
+  variables:
+    IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
+  script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker build -t $IMAGE_TAG .
+    - docker push $IMAGE_TAG
+  only:
+    - main
+    - develop
+    - /^release-.*$/
+
+deploy:
+  stage: deploy
+
+  
+    
+