Update CI

.gitea/workflows/build.yaml

@@ -3,7 +3,7 @@ run-name: $ is testing out Gitea Actions 🚀
 on: [push]
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: docker.io/ubuntu:latest
     steps:
       - run: echo "🎉 The job was automatically triggered by a $ event."
       - run: echo "🐧 This job is now running on a $ server hosted by Gitea!"