Recommend quick edit to setup step (Small nitpick)

[ainglimo-personal]

Recommending quick edit to setup step

#28 (comment)

Just a couple of points which may cause less experienced engineers to get confused.

Add user to docker group

I had to include the group I was adding my user to. This command could be simplified like this
"Make sure they have access to docker usermod -aG [your users name]"
to
"Make sure they have access to docker usermod -aG docker ${USER}"

This adds the current user that we are currently logged into to the docker group. Currently, the command fails because -G expects an argument

(I'm currently building this out on an Amazon Linux 2023 EC2 instance and seeing if I can get it to work)

[mbround18]

Thank you added! :)