add gitlab ci file

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+indent_size = 4

.gitlab-ci.yml

@@ -0,0 +1,10 @@
+build:
+   image: docker:latest
+   services:
+   - docker:dind
+   stage: build
+   script:
+     - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
+     - docker build --pull --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA .
+     - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
+     - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA