Dead link in Readme

[jfowl]

Bug description

The link "root & docker" is dead:

Steps to reproduce

View Readme

Workspace affected

No response

Expected behavior

No response

Example repository

No response

Anything else?

No response

[felladrin]

Thanks for reporting it, @jfowl!

I guess it should now point to https://www.gitpod.io/docs/config-docker#configure-a-custom-dockerfile, what do you think @jankeromnes?