document to make sure all mount points are given

Author: dominikzogg

README.md

@@ -33,13 +33,30 @@ A minimal skeleton to start with a minimal php project.
 
 ## Environment
 
-Add the following environment variable to your system, for example within `~/.bash_aliases`:
+Add the following environment variable to your system, for example within `~/.bashrc` or  `~/.zshrc`:
 
 ```sh
 export USER_ID=$(id -u)
 export GROUP_ID=$(id -g)
 ```
 
+Make sure all the mount points are given
+
+```sh
+touch ~/.bash_docker
+touch ~/.bash_history
+```
+
+```sh
+touch ~/.gitconfig
+touch ~/.gitignore
+```
+
+```sh
+touch ~/.zsh_docker
+touch ~/.zsh_history
+```
+
 ### Docker
 
 ```sh