Update readme about d2-holy-grail HOT 4 OPEN

It's currently listed as a Prerequisite

An installed and running instance of Mongo DB

However I'm also fine by checking in a docker-compose file or something like that wit ha mongo instance and adding this as an alternative to the readme, so you don't have to install mongo on your computer.

from d2-holy-grail.

@mpherman let me know if you have anything to add here, since you recently read it I guess.

from d2-holy-grail.

It was all good on dev steps for the most part. The only thing I might discuss is using npm ci instead of npm install.
I used npm ci as it didn't update any packages and installed exactly the versions from package-lock.json
When I used npm install it updated many dependencies to newer versions which might not be desired if someone is trying to install the current version of the app? I'm not sure if that was correct usage, but it worked for me.

from d2-holy-grail.

Maybe throw something in there about starting a local mongo, maybe through docker?

from d2-holy-grail.