diff --git a/.container b/.container
new file mode 100644
index 0000000..e2111b6
--- /dev/null
+++ b/.container
@@ -0,0 +1 @@
+ghcr.io/gardenlinux/repo-debian-snapshot@sha256:00a99d1c51a444e1b3091ef0ddeb030f4d57210dedab70208fcfc39660659265
diff --git a/prepare_source b/prepare_source
index bfc13bd..b3c5af2 100644
--- a/prepare_source
+++ b/prepare_source
@@ -15,3 +15,4 @@
 )
 
 apply_patches
+version_suffix=gl0