Update workflow to push to Gitea container registry

- Add login to Gitea registry
- Build and push amd64 image
- Tag with sha and latest

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/workflows/build.yaml

@@ -5,6 +5,10 @@ on:
     branches: [main]
   workflow_dispatch:
 
+env:
+  REGISTRY: gitea.anvil.it.com
+  IMAGE_NAME: ${{ github.repository }}
+
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -15,16 +19,28 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Build image for amd64
+      - name: Login to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITEA_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=sha
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Build and push image for amd64
         uses: docker/build-push-action@v5
         with:
           context: .
           file: ./server/Dockerfile
           platforms: linux/amd64
-          push: false
-          tags: vultr-api-server:${{ github.sha }}
-          load: true
-
-      - name: Test image
-        run: |
-          docker run --rm vultr-api-server:${{ github.sha }} python -c "from vultr_api import VultrClient; print('OK')"
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}