add ci workflow

.forgejo/workflows/ci.yml

@@ -0,0 +1,17 @@
+name: CI Test
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+jobs:
+  hello:
+    runs-on: docker
+    steps:
+      - name: Say hello
+        run: |
+          echo "Hello from Forgejo Actions!"
+          echo "Runner: $RUNNER_NAME"
+          uname -a
+          node --version
+      - name: Math check
+        run: echo "2+2 = $((2+2))"