Move the environment service to its own TLJH plugin

[jtpio]

Fixes #136.

Move the building of the Docker images to its own TLJH plugin, so it's easier to reuse in other TLJH deployments that don't use the same defaults as PlasmaBio.

The plugin is available at: https://github.com/plasmabio/tljh-repo2docker

• Add tljh-repo2docker to the plugin dependencies
• Update the documentation to mention the plugin

[pierrepo]

@jtpio just to be sure, the tljh-plasmabio local plugins becomes tljh-repo2docker?

[pierrepo]

Do you know if it's possible to move issues from a repo to another?

I'm thinking to those ones:

• #142
• #60
• Use an input field to specify the image to launch #46

[jtpio]

just to be sure, the tljh-plasmabio local plugins becomes tljh-repo2docker

tljh-plamasbio will still exist, but will be more about setting the JupyterHub config such as the PAMAuthenticator and using system users. And will also be much smaller in scope.

So the PlasmaBio would depend on both tljh-repo2docker and tljh-plasmabio.

Do you know if it's possible to move issues from a repo to another?

Yes indeed, this can be done when this PR is complete using the Transfer issue button on the issue page:

[pierrepo]

So the PlasmaBio would depend on both tljh-repo2docker and tljh-plasmabio.

Perfect!

when this PR is complete using the Transfer issue button

Good. And I guess the whole discussion is also transferred.

[jtpio]

And I guess the whole discussion is also transferred.

Yes and there is even some status message that indicates that the issue was moved.

[jtpio]

We can now set the default limits using tljh-config, which is better than having them hardcoded in the Python code of the plugin.

The tljh-repo2docker plugin is then able to pick them up to display the defaults in the UI: https://github.com/plasmabio/tljh-repo2docker/blob/ec9e2dee20095b11b4a933915694178775d50611/tljh_repo2docker/__init__.py#L80-L84

[jtpio]

Tested on a fresh VM and the combination of the 2 plugins seems to be working as expected.

We can consider moving some of the documentation to the tljh-repo2docker repo in a separate change, as mentioned in: plasmabio/tljh-repo2docker#4