Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -3,13 +3,17 @@ services:
   - docker:dind
 
 stages:
+  - build
+  - test
   - release
 
 before_script:
+  - npm uninstall -g docker
+  - npm install -g docker
   - npmci login docker
 
-release:
-  stage: release
+build:
+  stage: build
   script:
     - npmci build docker
   only:
@@ -17,3 +21,23 @@ release:
   tags:
     - docker
     - lossless
+    
+test:
+  stage: test
+  script:
+    - npmci test docker
+  only:
+    - master
+  tags:
+    - docker
+    - lossless
+
+release:
+  stage: release
+  script:
+    - npmci publish docker
+  only:
+    - master
+  tags:
+    - docker
+    - lossless