message: Add Docker section in README
diff: @@ -57,6 +57,17 @@ $ yarn start
  The final `yarn start` command should open a local instance of Backstage in your browser, otherwise open one of the URLs printed in the terminal.
  +### (Optional)Try on Docker
  +
  +Run the following commands if you have Docker environment
  +
  +```bash
  +$ docker build . -t spotify/backstage
  +$ docker run --rm -it -p 3000:3000 backstage
  +```
  +
  +Then open http://localhost:3000/ on your browser.
  +
  ## Documentation
  - [Create a Plugin](docs/getting-started/create-a-plugin.md)
  