Execute jobs only on master branch, better tags for images

.forgejo/workflows/ci.yml

@@ -6,6 +6,8 @@ on:
   schedule:
     - cron: '0 7 * * 0'
   push:
+    branches:
+      - "master"
 
 jobs:
   build:
@@ -24,12 +26,21 @@ jobs:
         username: ${{ secrets.USERNAME }}
         password: ${{ secrets.TOKEN }}
 
+    - name: Docker meta
+      id: meta
+      uses: https://github.com/docker/metadata-action@v5
+      with:
+        images: git.nadeko.net/fijxu/invidious
+        tags: |
+          type=sha,format=short,prefix={{date 'YYYY.MM.DD'}}-,enable=${{ github.ref == format('refs/heads/{0}', 'master') }}
+          type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'master') }}
+
     - uses: https://code.forgejo.org/docker/build-push-action@v5
       name: Build images
       with:
         context: .
         file: docker/Dockerfile
-        tags: git.nadeko.net/fijxu/invidious:latest 
+        tags: ${{ steps.meta.outputs.tags }}
         platforms: linux/amd64
         push: true
         build-args: |