update README

README.md

@@ -9,6 +9,9 @@ Running keepass2 in Docker
 You can use the following shortcut function and place it to your `~/.bash_aliases` file
 
 ```
-function docker_helper() { (cd ~/docker/$1; docker-compose run --rm "$@" & disown) }
-function keepass2() { (docker_helper $FUNCNAME $@) }
+alias docker="sudo -E docker"
+alias docker-compose="sudo -E docker-compose"
+
+function docker_helper() { { pushd ~/docker/$1; docker-compose rm -fa "$1"; docker-compose run -d --name "$1" "$@"; popd; } }
+function keepass2() { { docker_helper $FUNCNAME $@; } }
 ```