Improve error message below Phoenix 1.4?

[henrik]

Hi!

Regarding the gotcha "I am getting an error Command "deploy" not found. even though my previous deploys used to work. How to fix?" described in the README.

If it's not possible to automatically make this buildpack work with Phoenix 1.4, would it be possible to make the buildpack output a more helpful error message in this situation?

We ran into the issue and it took a while to figure it out, especially since it suddenly started happening between one deploy and the next, unrelated to our own code changes.

To be clear – I found the workaround described in the README and that fixed it :) Just thinking the error could maybe be made more obvious for the next person.