can I use a custom image?

.gitea/workflows/action.yaml

@@ -3,6 +3,8 @@ on: [push]
 
 jobs:
   Example-Actions:
-    runs-on: ubuntu-22.04
+    runs-on: linepics
     steps:
       - run: echo "🎉 The job was automatically triggered by a ${{ gitea.event_name }} event."
+      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by Gitea!"
+      - run: echo "🔎 The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."