Switch used Docker image

.gitea/workflows/sampleworkflow.yaml

@@ -5,9 +5,9 @@ on:
 
 jobs:  
   test:  
-    runs-on: ubuntu-latest
+    runs-on: alpine
 
     steps:  
-      - name: Print environment variables  
+      - name: Init gradle project
         run:  
           gradle init