Add docker-compose file as example

[marc-x-andre]

Describe in detail the problem you had and how this PR fixes it

There wasn't an example of how to use docker-compose with code-server.

Is there an open issue you can link to?

Yes. docker-compose examples #648

Fixes #648.

[ntindle]

With docker-compose, would it be trivial to add https with certbot for example purposes ?

[marc-x-andre]

With docker-compose, would it be trivial to add https with certbot for example purposes?

It could be easy, but I don't think it is in the scope of the example. The goal was to reproduce the docker command in the README:

docker run -it -p 127.0.0.1:8443:8443 -v "${PWD}:/home/coder/project" codercom/code-server --allow-http --no-auth

[frank-dspeed]

this should also mount the extension directorys so they get persisted

[damianstasik]

You have PASSWORD env var, but it will not work, because the --no-auth flag is set.

[nhooyr]

Should add a comment here indicating that you need to remove --no-auth with a docker-compose override file or edit this one if you want to use $PASSWORD.

[sr229]

Obsoleted by GH-857. Please rebase this to the newer tree.

[nhooyr]

@sr229 why is this obsolete? There is no merge conflict.

[deansheather]

@nhooyr @sr229 it's not obsoleted, it just uses old flags that changed since v2

[sr229]

I manually changed it to v2 flags. I'll work on this so it can be merged.

[sr229]

CC @code-asher feel free to merge this in or cherrypick.