Consider a Docker (potentially remote) deployment alongside linux-based only

[marco-miller]

Consider initializing support for an implementation based on [1] below.

• This would be alongside the currently proposed extension: Add initial openvscode-server support #3, which is mainly Linux-based [2].
• Below [3] might also have to be considered eventually or alongside [1,2].

[1] https://github.com/gitpod-io/openvscode-server#docker
[2] https://github.com/gitpod-io/openvscode-server#linux
[3] https://github.com/gitpod-io/openvscode-server#securing-access-to-your-ide