[CI] Forgejo tests

.forgejo/workflows/build.yaml

@@ -1,9 +1,10 @@
 on: [push]
 jobs:
   test:
-    runs-on: picard
+    runs-on: docker
+    container: ubuntu:rolling
     steps:
-      # - run: yes | apt update && apt install nodejs
+      - run: yes | apt update && apt install nodejs
-      # - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
-      # - uses: https://github.com/cachix/install-nix-action@v22
+      - uses: https://github.com/cachix/install-nix-action@v22
       - run: nix --version