Per-team environments

[pl4nty]

eg DUCTF's kubeCTF. could reuse their CTFd plugin, then a custom controller and ctfcli plugin to push chal templates. could also do instance flags

[pl4nty]

ACA custom dynamic sessions might be useful

[pl4nty]

plugin to inject user hashes as query param is complete, and ACA certs should be doable with a dedicated subdomain. still need to write middleware for session pool routing though, probably with cw and https://github.com/microsoft/reverse-proxy