Use the new Nix CI tool

Author: igor-ramazanov

.github/workflows/ci.yml

@@ -1,29 +1,20 @@
-name: ci
-
-on: push
+on:
+  pull_request:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+      - master
+    tags:
+      - "v?[0-9]+.[0-9]+.[0-9]+*"
 
 concurrency:
-  group: ${{ github.ref }}_ci
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 jobs:
-  build:
-    name: build
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/flakehub-cache-action@main
-      - uses: DeterminateSystems/flake-checker-action@main
-      - name: Build ELF
-        run: nix develop --command sbt nativeLink
-      - name: Build Unikernel
-        run: nix develop --command ops build ./target/scala-3.6.3/unikernel-scala-out
-      - uses: actions/upload-artifact@v4
-        with:
-          path: |
-            target/scala-3.6.3/unikernel-scala-out
-            ~/.ops/images/unikernel-scala-out.img
-          compression-level: 9
-          overwrite: true
-
+  DeterminateCI:
+    uses: DeterminateSystems/ci/.github/workflows/workflow.yml@main
+    permissions:
+      id-token: "write"
+      contents: "read"

README.md

@@ -103,10 +103,7 @@ Hello from Scala Native NanoVM Unikernel! Your request: Request(method=GET, uri=
 ## CI
 This repo uses `nix` based GitHub actions for caching the development environment dependencies,
 instead of the traditional approach with [`coursier/setup-action`](https://github.com/coursier/setup-action) and [`coursier/cache-action`](https://github.com/coursier/cache-action):
-1. https://github.com/DeterminateSystems/nix-installer-action
-1. https://github.com/DeterminateSystems/flake-checker-action
-1. https://github.com/DeterminateSystems/flakehub-cache-action
-
+https://github.com/DeterminateSystems/ci.
 
 ## Debugging
 Add `--verbose` and `--show-debug` flags to the `ops run ./target/scala-3.6.3/unikernel-scala-out` to see the `qemu` command: