CI v2: plain git-clone checkout (no node dependency), runs-on: docker

.gitea/workflows/build.yml

@@ -3,11 +3,14 @@ on: [push]
 
 jobs:
   build-test:
-    runs-on: ubuntu-latest
+    runs-on: docker
     container: rust:1-bookworm
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout
+        run: git clone --depth 1 ${{ github.server_url }}/${{ github.repository }}.git .
+
       - name: Build
         run: cargo build --workspace
+
       - name: Test
         run: cargo test --workspace --quiet