[Suggestion] Change the implemenation of --home option

[Orange-Icepop]

Problem description

--home currently changes $HOME inside the container but keeps the mount /home/username:/home/username fixed. This is problematic: some software ignore $HOME and hardcode /home/$USER, so they end up writing configs to the host’s home directory. This mixes up the host and the containers' configs, leading to compatibility issues.

Solution

Change --home so that the mount point /home/username is mapped to the user-specified host path instead.

Alternative solution

Allow users to edit (at least parts of) the container config directly. That would solve several other issues too, though it’s less user‑friendly.

Other comments

I know Distrobox isn’t meant to be a sandbox, but this directly hurts day‑to‑day usability. Fixing it would also bring a nice safety benefit.