diff --git a/.forgejo/workflows/error_check.yml b/.forgejo/workflows/error_check.yml
index 9e94a7b..830eaf1 100644
--- a/.forgejo/workflows/error_check.yml
+++ b/.forgejo/workflows/error_check.yml
@@ -10,16 +10,12 @@ on:
 
 jobs:
   luacheck_errcheck:
-    runs-on: ubuntu-latest
+    runs-on: docker
+    container: nickblah/lua:5.1-alpine
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Install Lua
-        uses: leafo/setup-lua@v1
-        with:
-          lua-version: '5.1'
-
       - name: Install Luacheck
         run: luarocks install luacheck
 
diff --git a/default.nix b/flake.nix
similarity index 100%
rename from default.nix
rename to flake.nix