README updated - custom truffle network and docker

Author: sskender

README.md

@@ -16,6 +16,7 @@ npm run compile
 
 ```
 npm run migrate
+npm run migrate --network mycustomnetwork
 npm run migrate:reset
 ```
 
@@ -55,6 +56,14 @@ npm run build
 npm run lint
 ```
 
+## Docker
+
+Build production ready docker image
+
+```
+docker build --tag dapp-vue-starter .
+```
+
 ### Customize configuration
 
 See [Configuration Reference](https://cli.vuejs.org/config/).