We will need to sign this change but I will see if it works first, I'm not sure if the compile script can handle this version without modifications

As I thought we have to update the packager first. Adding the update template for 4.1-dev and update the packing script to support 4.1-dev

Finally, does this PR also make it possible to download Joomla 4.1 from the Nightly Builds?

i'm sorry no, this will allow when it will work to have a prebuild dowload package for pr against the 4.1-dev branch, like you currently have for pr against staging and 4.0-dev

Finally, does this PR also make it possible to download Joomla 4.1 from the Nightly Builds?

Thefore we need to setup a jenkins task and update Developer this is not something to be done in the cms repo

I assume that for testing these prebuild dowload packages, it is required to test in Joomla! 4.1 anyway.
I think many will drop out if no download is available from Nightly builds.

not exactly the prebuild package will come with all in place to test a pr with 4-1.dev, ie 4.1-dev+pr, like we already have for staging and for 4.0-dev it's an alternative way to test a pr without for example com_patchtester, nightly builds is another thing

PR for the update server has been added here: joomla-projects/docker-images#30 and the branch version has been bumped here: 66573c9

So once that packager PR is deployed and this branch updated this should be OK i guess. cc @HLeithner

@alikon please use this signature: df68dcf150bfb9093f6f8506f631a86ecaf5a62b25e486558abd721cf94c9082

thanks