Timeout error for GitHub action CacheNotebooks

[bennibolm]

The GitHub action repo2docker-action seems to have a maximum time allowed of 900s to trigger mybinder (implemented here). So, our action fails with the timeout error curl: (28) Operation timed out after 900000 milliseconds with 423286 bytes received.

A question about the possibility of adjusting the time limit can be found in this issue.

[ranocha]

Thanks for discovering this!