Try running command

.forgejo/workflows/demo.yaml

@@ -4,16 +4,6 @@ on:
     types: [opened, synchronize, reopened]
 jobs:
   test:
-    runs-on: ubuntu-22.04
+    runs-on: docker
     steps:
-      - uses: https://code.forgejo.org/actions/checkout@v4
-      - uses: https://github.com/actions/setup-go@v5
-        with:
-          go-version: '1.22.4'
-      - uses: https://github.com/ko-build/setup-ko@v0.7
-        with:
-          version: v0.15.4
-      - run: ko login platform.sunet.se --username ci-sunet-cdn --password ${{ secrets.CI_SUNET_CDN }}
-      - run: ko build
-        env:
-          KO_DOCKER_REPO: platform.sunet.se/sunet-cdn
+      - run: cat /etc/passwd

go.mod

@@ -1,3 +0,0 @@
-module action-runner-testgo
-
-go 1.22.4

main.go

@@ -1,9 +0,0 @@
-package main
-
-import (
-	"fmt"
-)
-
-func main() {
-	fmt.Println("hello container")
-}