Add CI

.forgejo/workflows/build.yaml

@@ -0,0 +1,20 @@
+on: [push]
+jobs:
+  build:
+    runs-on: docker
+    steps:
+      - name: Set up dependencies
+        run: |
+          apt-get update
+          apt-get -y install sudo
+      - name: Install Nix
+        uses: https://github.com/cachix/install-nix-action@v27
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build
+        run: nix build -L
+      - name: Upload
+        uses: actions/upload-artifact@v3
+        with:
+          name: password-hash-self-service
+          path: result/