If MITK is delivered as a dockerized application there is no easy way to download Qt automatically during the build process. Interaction with the Qt Company did not provide a solution either for complete open source activities like Kaapana (internal)
One workaround the worked surprisingly well was the change to use the Ubuntu System Qt packages.
I would like to propose and discuss if we could add at least one Ubuntu-based configuration to the CI which actively checks this works, both for build and packaging process.
Related: T27887 T27785