[supervisor] Make compatible with run-gp

[csweichel]

Description

Makes supervisor compatible with run-gp and cleans up some code.

How to test

In Gitpod no behaviour should change.

To test this with run-gp:

1. open a workspace on https://github.com/gitpod-io/run-gp
2. run ./hack/update-images.sh cw-run-gp-compat.3
3. run ./hack/update-assets.sh
4. run go run main.go

Release Notes

NONE

Werft options:

• /werft with-preview

[mustard-mh]

/werft run

👍 started the job as gitpod-build-cw-run-gp-compat.4
(with .werft/ from main)

[werft-gitpod-dev-com]

started the job as gitpod-build-cw-run-gp-compat.5 because the annotations in the pull request description changed
(with .werft/ from main)

[mustard-mh]

Code LGTM

• Maybe we should fix this gp preview command so that user can access URL in vscode built-in browser.
• Cannot access task port 5000 (defined in .gitpod.yml) in preview env
• Log workspace location of run-gp is not correct (always http://localhost:8080/?folder=/workspace, but we need http://localhost:8080/?folder=/workspace/<folder_name>

Are they run-gp repo part's issue? Feel free to unhold

/hold

[csweichel]

• Maybe we should fix this gp preview command so that user can access URL in vscode built-in browser.
• Cannot access task port 5000 (defined in .gitpod.yml) in preview env
• Log workspace location of run-gp is not correct (always http://localhost:8080/?folder=/workspace, but we need http://localhost:8080/?folder=/workspace/<folder_name>

Are they run-gp repo part's issue? Feel free to unhold

Those are run-gp issues indeed. I'll file them in the repo.
Thank you for checking up on those.

/hold cancel

[csweichel]

filed gitpod-io/run-gp#13 and gitpod-io/run-gp#14