undate Docker + workflows

.gitea/workflows/build-push.yaml

@@ -0,0 +1,42 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.out.jafre.li
+          # ${{ gitea.actor }} ist der User, der den Push macht
+          username: ${{ gitea.actor }}
+          # ${{ secrets.GITHUB_TOKEN }} wird von Gitea automatisch bereitgestellt
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: git.out.jafre.li/${{ gitea.repository }}
+          tags: |
+            type=raw,value=latest
+            type=sha,format=long
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}