ci: smoke test workflow

.gitea/workflows/ci.yml

@@ -0,0 +1,15 @@
+name: CI Smoke
+on:
+  push:
+    branches: [main]
+jobs:
+  smoke:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Runner info
+        run: |
+          echo "host   : $(hostname)"
+          echo "whoami : $(whoami)"
+          uname -a
+      - name: Docker reachable
+        run: docker version --format 'server={{.Server.Version}}'