Updated drone ci to publish conatiner to ghcr

.drone.yml

@@ -36,18 +36,33 @@ steps:
       - yarn
       - yarn build
 
+  - name: Publish docker image
+    image: plugins/docker
+    settings:
+      registry: ghcr.io
+      repo: ghcr.io/kevinmidboe/planetposen-frontend
+      dockerfile: Dockerfile
+      username:
+        from_secret: GITHUB_USERNAME
+      password:
+        from_secret: GITHUB_PASSWORD
+      tags: latest
+
 depends_on:
   - Lint and build project
 
 trigger:
   branch:
     - main
+    - ci/ghcr-publish
   event:
+    include:
+      - push
     exclude:
       - pull_request
 
 ---
 kind: signature
-hmac: 84765f19d995d66f1d3409c4eddd1f68d1f2d297d65cd9e2612e6bb13e8ecb94
+hmac: eac31ba5baf0202b5920c39674cbb95767fe91e8ee36c773e2db78eee31e8879
 
 ...