ci: add GitLab CI config

.gitlab-ci.yml

@@ -5,22 +5,28 @@ default:
 test:
   rules:
     - if: $CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+      when: never
   script:
-    - docker build -t testimage:latest .
-    - docker run --rm -it testimage:latest tests/test.sh
+    - export IMAGE="${DOCKER_ORG}/${DOCKER_REPO}:latest"
+    - docker build -t $IMAGE .
+    - docker run --rm $IMAGE tests/test.sh
 
-publish:
+test_and_publish:
   rules:
-    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+    - if: $CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+      when: never
   script:
     - export VERSION=$(grep 'version <-' ascii_alignment_pileup.R | cut -f2 -d'"')
-    - export IMAGE="${DOCKER_ORG}/${DOCKER_REPO}:${VERSION}"
+    - export IMAGE="${DOCKER_ORG}/${DOCKER_REPO}"
     - |
       docker build \
-      -t $IMAGE \
+      -t ${IMAGE}:${VERSION} \
       --build-arg version=$VERSION \
       .
-    - docker run --rm -it $IMAGE tests/test.sh
+    - docker run --rm ${IMAGE}:${VERSION} tests/test.sh
     - echo "${DOCKER_TOKEN}" | docker login -u "${DOCKER_USER}" --password-stdin
-    - docker push $IMAGE
-
+    - docker tag ${IMAGE}:${VERSION} ${IMAGE}:latest
+    - docker push ${IMAGE}:${VERSION}
+    - docker push ${IMAGE}:latest