add build and push

Author: brosner

.github/workflows/ci.yml

@@ -53,3 +53,33 @@ jobs:
         with:
           image: ${{ env.IMAGE_NAME }}:ci
           run: pytest
+  build:
+    name: Build and push image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Generate metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=sha
+      - name: Build image
+        uses: docker/build-push-action@v5
+        if: github.ref == 'refs/heads/main'
+        with:
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          target: prod
+          load: true
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          push: true