ci: add Gitea Actions build and push workflow for flat-stack-presejpacky

.gitea/workflows/build-presejpacky.yml

@@ -0,0 +1,46 @@
+name: Build and Push Presejpacky Docker Image
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'drills/flat-stack-presejpacky/**'
+    tags:
+      - 'presejpacky-v*'
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Gitea Registry
+        uses: docker/login-action@v3
+        with:
+          registry: gitea.home.hrajfrisbee.cz
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            gitea.home.hrajfrisbee.cz/${{ github.repository_owner }}/flat-stack-presejpacky
+          tags: |
+            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
+            type=match,pattern=presejpacky-v(.*),group=1
+
+      - name: Build and push image
+        uses: docker/build-push-action@v6
+        with:
+          context: drills/flat-stack-presejpacky
+          file: drills/flat-stack-presejpacky/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}