document jb debugging

[neurolibre]

document jb debugging

[ltetrel]

Binder session is always spawned after the jupyter-book build, including running notebooks.
If a user has long-running notebooks such as nimare submission, the spawning will take too long because it will wait for jupyter-book build to finish (succeed or fail).
One way for user to quickly debug their notebook inside binder is to use the flag neurolibre-debug in their latest commit message, this will bypass jupyter-book build step when asking a binder instance.
This is obviously just for debugging purpose, final submission should build jb. This is also an issue just on the test environment, on the production no jb build is performed.
neurolibre/terraform-binderhub@d679419#diff-f57f86ab8bc7ba0d92e1feafb335d098cd2aadc775cfefbdb8624b2c6c70a39e

[ltetrel]

jb build can be done inside a terminal session (on binder).
neurolibre/neurolibre-reviews#7 (comment)

[ltetrel]

65bfb4b