add action

.forgejo/workflows/docker.yaml

@@ -0,0 +1,32 @@
+name: Build and push Docker image
+
+on:
+  push:
+
+jobs:
+  build-and-publish:
+    runs-on: docker
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build latest
+        uses: https://codeberg.org/umglurf/kaniko-action@main
+        with:
+          cache: true
+          cache_repo: ${{ vars.DOCKER_REGISTRY }}/${{ github.repository }}/cache
+          credentials: |
+            ${{ vars.DOCKER_REGISTRY }}=${{ secrets.DOCKER_USERNAME }}:${{ secrets.DOCKER_PASSWORD }}
+          destinations: |
+            ${{ vars.DOCKER_REGISTRY }}/${{ github.repository }}:latest ${{ vars.REGISTRY_URL }}/${{ github.repository }}:${{ github.sha }}
+          push: "true"
+        if: github.ref == 'refs/heads/master'
+      - name: Build ref
+        uses: https://codeberg.org/umglurf/kaniko-action@main
+        with:
+          cache: true
+          cache_repo: ${{ vars.DOCKER_REGISTRY }}/${{ github.repository }}/cache
+          credentials: |
+            ${{ vars.DOCKER_REGISTRY }}=${{ secrets.DOCKER_USERNAME }}:${{ secrets.DOCKER_PASSWORD }}
+          destinations: |
+            ${{ vars.DOCKER_REGISTRY }}/${{ github.repository }}:${{ github.ref_name }} ${{ vars.REGISTRY_URL }}/${{ github.repository }}:${{ github.sha }}
+          push: "true"
+        if: github.ref != 'refs/heads/master'