fix: drop buildx, use native docker build+push for Gitea runner compat

.gitea/workflows/build-and-deploy.yaml

@@ -47,9 +47,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
       - name: Log in to registry
         uses: docker/login-action@v3
         with:
@@ -57,24 +54,13 @@ jobs:
           username: ${{ gitea.actor }}
           password: ${{ secrets.REGISTRY_TOKEN }}
 
-      - name: Docker meta
+      - name: Build and push Docker image
-        id: meta
+        run: |
-        uses: docker/metadata-action@v5
+          IMAGE_TAG=sha-$(git rev-parse --short HEAD)
-        with:
+          docker build -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$IMAGE_TAG .
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$IMAGE_TAG
-          tags: |
+          docker tag ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$IMAGE_TAG ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
-            type=sha,prefix=,suffix=,format=short
+          docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
-            type=raw,value=latest
-
-      - 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
 
   deploy:
     runs-on: ubuntu-latest