I knew that posting this problem would help me find the fix.
Posting led me to this thread with this answer by @Mark:
I realized almost instantly that my config/runtime.exs does have an error. Endpoints are configured by the web context, not the app context so I changed to configuring ShrimpWeb.Endpoint instead of Shrimp.Endpoint and it fixed the issue.
I’m sure that Chris and Mark are probably working on mistake-proofing these deploys. I’m happy to help if this is desired. I’m good at breaking things. 