Deploy a `dev` instance of our app

[fyliu]

Dependency

• 327

Overview

The last part of our initial deployment is to deploy a dev instance for our own testing. ask ops to test and deploy either a dev instance that's triggered by updates to a branch such as main

Action Items

• [ ] ask ops to test and deploy a dev instance that's triggered by updates to a branch such as main
• [ ] if it's easier, split this issue into manual deploy + auto deploy steps

After Merge

• [ ] check off this issue in #297 and close it if done