ci: Add Gitea Actions workflow to build and push Docker image to Gitea Container Registry

.gitea/workflows/docker-publish.yml

@@ -0,0 +1,47 @@
+name: Build & Publish Docker Image
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - 'v*'
+  workflow_dispatch: {}
+
+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 Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.alwisp.com
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Extract metadata (tags & labels)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: git.alwisp.com/jason/breedr
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha,prefix=sha-,format=short
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max