Update README.md

Author: marc0der

README.md

@@ -7,15 +7,7 @@ This enables the users of SDKMAN to contribute new Installation Candidates and r
 
 ## Tools used
 
-This repo uses [mongobee](https://github.com/mongobee/mongobee) as database migration framework. In order to contribute a PR, it is required to have a local installation of MongoDB on your machine. Alternatively run it up with Docker (works on Linux):
-
-        $ docker run -d --network=host --name=mongo mongo:3.2
-
-**Docker Desktop for Mac**
-
-To connect to MongoDB when using Docker Desktop for Mac you need to forward the port explicitly:
-
-        $ docker run -d -p 27017:27017 --name=mongo mongo:3.2
+This repo uses [mongobee](https://github.com/mongobee/mongobee) as database migration framework. In order to contribute a PR, it is required to have a local installation of Docker on your machine. The Gradle will automatically start and stop the MongoDB Docker container.
 
 ## The Build