message: README: add $5
diff: @@ -29,19 +29,19 @@ $ make init-secrets
  The full local system consists of a collection of backend services, as well as a web application. From the root of the project directory, run the following in a terminal to start up all backend services locally:
  ```bash
  -cd backend
  +$ cd backend
  -docker-compose up --build
  +$ docker-compose up --build
  ```
  Once the backend services are up and running, open a separate terminal window and start the web app using the following commands from the project root:
  ```bash
  -cd frontend
  +$ cd frontend
  -yarn # may take a while
  +$ yarn # may take a while
  -yarn start
  +$ 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.
  