added initial gitlab pipeline

Changelog: None
Signed-off-by: Manuel Zedel <manuel.zedel@northern.tech>

.gitlab-ci.yml

@@ -0,0 +1,33 @@
+image: docker:git
+
+variables:
+  DOCKER_REPOSITORY: mendersoftware/mender-convert
+  IMAGE_NAME: mender-convert
+  MENDER_CLIENT_VERSION: '2.0.0'
+
+stages:
+  - test
+  - build
+
+test:
+  stage: test
+  script:
+    - apk add --no-cache bash
+    - git clone git://github.com/mendersoftware/mendertesting
+    # Check commit compliance.
+    - mendertesting/check_commits.sh
+    # Check licenses
+    - mendertesting/check_license.sh
+
+build:
+  stage: build
+  services:
+    - docker:dind
+  script:
+    - docker build -t ${IMAGE_NAME} --build-arg mender_client_version=${MENDER_CLIENT_VERSION} .
+    - docker save $DOCKER_REPOSITORY:pr > image.tar
+  artifacts:
+    expire_in: 2w
+    paths:
+      - image.tar
+