I'm filing a Jira ticket as suggested in Mattermost.
In order to explore shipping our Eclipse-based products as Flatpak applications, (initially SCL and maybe eventually also JBDS) I need a build slave for the Jenkins that is capable of generating Flatpaks.
The newly released RHEL 7.6 has a sufficiently new version of flatpak and flatpak-builder packages. Please also ensure there is java-1.8.0-openjdk-devel and a recent maven installed.
Please consider adding such a builder.