Allow repos to specify initial URL

Right now a binder instances opens to the classic notebook which has a URL of /tree. It would be very helpful to allow a repo to specify the initial URL so that, for example, JupyterLab could open up (/lab). Combined with per repo DOCKERFILE support this would open the door to host just about anything this way.

[ellisonbg]

We have not implemented the ability to open lab with a particular file. Here is the issue though:

https://github.com/jupyterlab/jupyterlab/issues/1075

On Wed, Oct 4, 2017 at 6:59 AM, Min RK [e-mail] wrote:

I think 1 is going to make sense as an escape hatch, regardless. I don’t think urlPrefix will make sense - it assumes that any supported application supports the same filepath URLs that the notebook app does (none do, as far as I know). 3. sounds good for cases where we can accumulation knowledge over time about:

1. what application is launched, and
2. how that application can be told to open filepath

while urlpath covers all such cases until we develop the knowledge of the given application.

@ellisonbg https://github.com/ellisonbg what’s the current status of opening a particular file with jupyterlab via a url?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/jupyterhub/binderhub/issues/128#issuecomment-334164319, or mute the thread https://github.com/notifications/unsubscribe-auth/AABr0I7VDJgjFcOxHvenZsrbBLh_9iHJks5so48rgaJpZM4PmO2_ .

– Brian E. Granger Associate Professor of Physics and Data Science Cal Poly State University, San Luis Obispo @ellisonbg on Twitter and GitHub [e-mail] and [e-mail]

[ellisonbg]

Yeah, I think that is a good idea to hide some of these details from the user behind a more intuitive UI

On Wed, Nov 1, 2017 at 1:01 PM, Grant Nestor [e-mail] wrote:

Regarding UI, I don’t think that urlPath and filePath should be user-facing. Ideally, there would be a dropdown menu in the binder dashboard that allows users to select from a couple options (e.g. “Jupyter Notebook”, “JupyterLab”, “Custom path”) and for the notebook and custom options (until JupyterLab supports URLs), there would be an optional text field for extending that path.

Something like this:

[image: binder] https://user-images.githubusercontent.com/512354/32294683-2849f096-bf04-11e7-8115-28988ca7cac7.png

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/jupyterhub/binderhub/issues/128#issuecomment-341222909, or mute the thread https://github.com/notifications/unsubscribe-auth/AABr0CFmb1yuWMzk2AJp9WhRRTJWIpf9ks5syM4SgaJpZM4PmO2_ .

– Brian E. Granger Associate Professor of Physics and Data Science Cal Poly State University, San Luis Obispo @ellisonbg on Twitter and GitHub [e-mail] and [e-mail]