Investigation: Why is our VS Code fork not working on Ubuntu 20.04

MR:

• Use bullseye image for vscode build (gitlab-build-images!780 - merged)
• Use buster as the base image for vscode build (gitlab-build-images!781 - merged)
• Update tools injector image for workspaces (!145907 - merged)

Description

The latest version of upstream VS Code still mentions that it should work on Ubuntu 20.04. Which means there is something off in how we are building/running our fork - https://code.visualstudio.com/updates/v1_86#_linux-minimum-requirements-update . Based on our findings our fork is not working on Ubuntu 20.04.

Also, the latest version of upstream VS Code has some tooling updates. We might want to update our fork again to not create more disruptions for our end users.

We need to fix both these before we can proceed with this.

Acceptance Criteria

• Our fork of VS Code works on Ubuntu 20.04
• If it does not, a credible reason of why