chore: Docker dev setup

README.md

@@ -101,9 +101,26 @@ Consider that this is just a basic example: images are uploaded as soon as they
 the *upload_admin_post_path*) and it doesn't provide a way to remove images (just deleting them from
 the editor will not destroy them, you'll need to implement a purge logic for that).
 
-## Changelog
+## Development
 
-The changelog is available [here](CHANGELOG.md).
+Project created by [Mattia Roccoberton](http://blocknot.es), thanks also to the good guys that opened issues and pull requests from time to time.
+
+A Docker dev setup is provided if you like to work with it:
+
+```sh
+# Run rails server on the dummy app (=> http://localhost:3000 to access to ActiveAdmin):
+make up
+# Enter in a console of the dummy app after it has been started:
+make console
+# Enter in a shell of the dummy app after it has been started:
+make shell
+# Run the linter on the project:
+make lint
+# Remove container and image after stopping the app:
+make cleanup
+```
+
+For more commands please check the [Makefile](Makefile).
 
 ## Do you like it? Star it!
 
@@ -111,11 +128,6 @@ If you use this component just star it. A developer is more motivated to improve
 
 Or consider offering me a coffee, it's a small thing but it is greatly appreciated: [about me](https://www.blocknot.es/about-me).
 
-## Contributors
-
-- [Mattia Roccoberton](http://blocknot.es): author
-- The good guys that opened issues and pull requests from time to time
-
 ## License
 
 The gem is available as open-source under the terms of the [MIT](LICENSE.txt).