diff --git a/_sync.sh b/_sync.sh
index 2a89b5a..95c1006 100755
--- a/_sync.sh
+++ b/_sync.sh
@@ -28,6 +28,7 @@ files=(
   "/usr/local/etc/smb4.conf:smb4.conf"
   "/etc/sysctl.conf:sysctl.conf"
   "/usr/local/bin/w_status:w_status"
+  "$HOME/debian.sh:docker.sh"
 )
 
 # create directories
diff --git a/docker.sh b/docker.sh
new file mode 100755
index 0000000..e808040
--- /dev/null
+++ b/docker.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+chroot -n /compat/debian /bin/bash