use ubuntu

.gitea/workflows/docker_builder_latest.yaml

@@ -8,9 +8,7 @@ on:
 jobs:
   build:
     if: github.actor != 'github-actions[bot]'
-    runs-on: self-hosted
-    container:
-      image: gitea.prod.resk-u.ch/clerc/alpine:latest
+    runs-on: ubuntu-latest
     steps:
       - name: Set up and Install Dependencies
         run: |