ci: add automatic publishing

Fixes #21

.gitlab-ci.yml

@@ -14,8 +14,6 @@ stages:
   - deploy
 
 build:
-  tags:
-    - docker
   stage: build
   script:
     - npm run build
@@ -56,6 +54,21 @@ routes:
     paths:
       - routes.md
 
+package:
+  dependencies:
+    - build
+  tags:
+    - secrecy
+  stage: deploy
+  script:
+    - echo "//registry.npmjs.org/:_authToken=$NPM_AUTH_TOKEN" > ~/.npmrc
+    - npm publish
+  only:
+    - /^v[0-9]+.[0-9]+.[0-9]+$/
+  artifacts:
+    paths:
+      - lib
+
 pages:
   stage: deploy
   script: