run on docker and install packages

.forgejo/workflows/build.yml

@@ -4,7 +4,10 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: docker
+    container:
+      image: docker.io/alpine:3.21.2
     steps:
+      - run: apk update && apk add --no-cache nodejs git
       - uses: actions/checkout@v4
       - uses: https://github.com/docker/setup-buildx-action@v3