running ghci in a docker project doesn't load my ~/.ghci

[radix]

I have a ~/.ghci that sets my prompt, and it doesn't get loaded when I run stack --docker ghci

I realize that my entire filesystem doesn't get mounted into the docker image, and that there are good isolation benefits for not mounting my entire home directory -- however, perhaps the ghci file could be copied in as a special case?

[mgsloan]

Actually, a change in the last version was to add $HOME and $TMPDIR to the container - #1949

The issue is probably that it is not located in the container user's home folder (the stack user). So, we'd need to add some logic to stack ghci which knows to pass in a -ghci-script= argument with the user's .ghci.

Should be a mostly straightforward change, PRs appreciated :D

The main tricky bit is plumbing the info that we're in a docker container and where the home folder is. Perhaps the info is already available in the Reader.