limit job parallelism

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

@@ -15,7 +15,7 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-        
+      
       - uses: DeterminateSystems/determinate-nix-action@v3
 
       - uses: DeterminateSystems/flake-checker-action@main
@@ -28,19 +28,23 @@ jobs:
           endpoint: ${{ secrets.ATTIC_ENDPOINT }}
           cache: ${{ secrets.ATTIC_CACHE }}
           token: ${{ secrets.ATTIC_TOKEN }}
-            
+
       - name: Build Docker Image via Nix Flake
         run: |
-          nix build .#dockerImage --print-build-logs
+          NIX_BUILD_CORES=2 nix build .#dockerImage --max-jobs=2 --print-build-logs
           docker load < result
-          
+
+      - name: Push closure to Attic cache
+        run: |
+          attic push ${{ secrets.ATTIC_CACHE }} ./result
+
       - name: Log in to Gitea Container Registry
         uses: docker/login-action@v3
         with:
           registry: ${{ github.server_url }}
           username: ${{ secrets.CI_USER }}
           password: ${{ secrets.CI_PASSWORD }}
-          
+      
       - name: Tag and Push Docker Image
         run: |
           VERSION=${{ github.run_number }}
@@ -57,17 +61,17 @@ jobs:
           docker tag $SOURCE_IMAGE $TARGET_IMAGE:latest
           docker push $TARGET_IMAGE:$VERSION
           docker push $TARGET_IMAGE:latest
-          
+      
       - name: Setup Helm
         uses: azure/setup-helm@v4
         with:
           version: v3.14.0
-          
+      
       - name: Package Helm Chart
         run: |
           VERSION=${{ github.run_number }}
           helm package ops/chart --version $VERSION --app-version $VERSION
-          
+      
       - name: Push Helm Chart to Gitea Registry
         run: |
           VERSION=${{ github.run_number }}
@@ -76,4 +80,4 @@ jobs:
           curl -f --user "${{ secrets.CI_USER }}:${{ secrets.CI_PASSWORD }}" \
                -X POST \
                --upload-file ./$CHART_FILE \
-               "${{ github.server_url }}/api/packages/${{ github.repository_owner }}/helm/api/charts"
+               "${{ github.server_url }}/api/packages/${{ github.repository_owner }}/helm/api/charts"