Update 'README.md'

README.md

@@ -1,6 +1,18 @@
 # docker
 
-[TOC]
+## Setup
+
+### Alphine
+source https://wiki.alpinelinux.org/wiki/Docker
+
+```bash
+apk add docker
+addgroup username docker
+rc-update add docker default
+service docker start
+
+```
+
 
 ## Volumes