What is your suggestion?

Coder v2 has a one-line, or Docker-based installation method, similar to that in code-server:

• code-server install script
• code-server Docker container

Why do you want this feature?

This makes Coder subjectively easier to try. This is part of the open source switch criteria, as defined by @ammario.

Are there any workarounds to get this functionality today?

Yes, installing a binary or package from releases

Are you interested in submitting a PR for this?

I can contribute, but probably not own, a Dockerfile or install script for Coder v2.