diff --git a/_sync.sh b/_sync.sh
index 95c1006..348389b 100755
--- a/_sync.sh
+++ b/_sync.sh
@@ -28,7 +28,7 @@ files=(
   "/usr/local/etc/smb4.conf:smb4.conf"
   "/etc/sysctl.conf:sysctl.conf"
   "/usr/local/bin/w_status:w_status"
-  "$HOME/debian.sh:docker.sh"
+  "$HOME/docker.sh:docker.sh"
 )
 
 # create directories
diff --git a/docker.sh b/docker.sh
index e808040..ac4716d 100755
--- a/docker.sh
+++ b/docker.sh
@@ -1,3 +1,15 @@
-#!/bin/sh
+#!/usr/bin/env bash
+# Tool to set docker remote TCP daemon
 
-chroot -n /compat/debian /bin/bash
+docker_port="2375"
+docker_default="srv-master"
+
+if [ -n "$1" ]; then
+  export DOCKER_HOST="tcp://$1:$docker_port"
+else
+  export DOCKER_HOST="tcp://$docker_default:$docker_port"
+fi
+
+# enter shell with new environment variables
+
+$SHELL