a few misc issues with MacOS POCS developer install

[lspitler]

Describe the bug
Attempted a clean developer install of POCS on MacOS running homebrew and miniconda. Encountered a few bugs.

To Reproduce
Steps to reproduce the behavior:

curl -fsSL https://install.projectpanoptes.org > install-pocs.sh
bash install-pocs.sh
1
lspitler
[pass for github ssh key]
1

Expected behavior
Expected it to work, but got the following errors/problems:

• the group of my default user (lspitler) is not the same name of my user
• md5sum is not on MacOS (e.g. https://www.garron.me/en/bits/how-to-md5sum-mac-os-x.html )
• (home)brew does not like being run as sudo
• it seemed to re-install a lot of things like wget, curl, git, etc. which ends up breaking a lot of things.