diff --git a/README.md b/README.md
index 62ec774..cb4e929 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,16 @@ Use this Dockerfile / -image to start a sshd-server upon a lightweight Alpine co
 * Password of "root"-user can be changed when starting the container using --env
 * You can choose between ssh-keypair- and password auth
 
+### Extending this image
+This image is designed to be as slim and vanilla as possible.   
+If you need additional Tools like `git` or `bash`-shell, I definetly recommend to build your own image on top of `alpine-sshd`:
+```Dockerfile
+FROM hermsi/alpine-sshd:latest
+
+RUN apk add --no-cache --upgrade \
+      git \
+      bash
+```
 ### Basic Usage
 #### Authentication by password
 ```