POC: Connect Web IDE to a container

Goal

Based on @viktomas's research in #367339 (comment 1035179565), we are confident we can connect the Web IDE to a publically available port. The goal of this POC is to prove that it's possible to establish a connection between the Web IDE and a container running VS Code Server.

Requirements

• Remote environment running on a K8s cluster
• Custom docker container running VS Code Server
• Publicly exposed port
• Web IDE connects to the environment

These are not part of the POC:

• Authentication of any sort
• SSH or tunneling into the remote environment
• Advanced IDE features like code completion or linting

Success criteria

• Hello world output?

Results

Working proof of concept: https://gitlab.com/gitlab-com/create-stage/editor-poc/remote-development/frontend-for-vs-server