Devcontainer improvements

[andrewm4894]

playing around with similar idea to this PR. #327

changes:

• make devcontainer more generic as opposed to launching into any specific service.
• add readme to .devcontainer folder with some example usage.
• ensure pre-commit is installed and available in dev container.
• validate that docker compose up --build works from within the codespace.

[andrewm4894]

[andrewm4894]

[yk]

hey this is awesome. do you think you could also tell people about this in the main README? or at least drop a hint there with a link to the readme you wrote?

[andrewm4894]

hey this is awesome. do you think you could also tell people about this in the main README? or at least drop a hint there with a link to the readme you wrote?

yep will do, will add a one liner and link. just was hesitant to add too much myself into the main readme but agree makes sense to reference it - will do in a few mins

[andrewm4894]

@yk done

[yk]

awesome, thank you!