run on nixos

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

@@ -13,20 +13,14 @@ env:
 
 jobs:
   build-release:
-    runs-on: ubuntu-latest
+    runs-on: nixos
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Install Nix
-        uses: cachix/install-nix-action@v26
-        with:
-          nix_path: nixpkgs=channel:nixos-unstable
-
       - name: Build Docker Image via Nix Flake
         run: |
-          export HOME=$TMPDIR
-          nix build --impure ./build/#dockerImage
+          nix build ./build/#dockerImage
           docker load -i result
 
       - name: Log in to Gitea Container Registry
@@ -40,19 +34,16 @@ jobs:
         run: |
           VERSION=${{ github.run_number }}
           TARGET_IMAGE=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-          
+          nix shell nixpkgs#docker
           # Replace 'nix-built-image:latest' with your flake's internal image name
           docker tag nix-built-image:latest $TARGET_IMAGE:$VERSION
           docker push $TARGET_IMAGE:$VERSION
 
-      - name: Setup Helm
-        uses: azure/setup-helm@v4
-        with:
-          version: v3.14.0
-
       - name: Package Helm Chart
         run: |
           VERSION=${{ github.run_number }}
+
+          nix shell nixpkgs#kubernetes-helm
           # Packages the chart using the dynamically injected repo name
           helm package ops/chart --version $VERSION --app-version $VERSION