OpenHab 2.3/Docker/Proxy: PaperUI in OpenHab 2.3 start failed after update


updating OpenHab 2.1 to 2.3 failed with following log message:

2018-06-18T11:40:39.484085965Z openhab> 13:40:39.467 [pool-21-thread-1] ERROR org.openhab.core.karaf.internal.FeatureInstaller - Failed installing ‘openhab-ui-basic, openhab-misc-restdocs, openhab-binding-homematic, openhab-ui-habpanel, openhab-persistence-mysql, openhab-transformation-regex, openhab-ui-paper, openhab-binding-mqtt1’: Error:
2018-06-18T11:40:39.485076393Z Error downloading mvn:org.openhab.binding/org.openhab.binding.homematic/2.3.0

I’m using Linux Mint 18.2 (behind a mandatory proxy) and the docker container.
Pulling the docker image works and OpenHab starts. Paper-UI does not finish setup.

Howto setup a proxy for maven?

Best regards

My Workaround is the manual installation “3. (Optional) Download the add-on archives for offline use and put them in the addons folder of the extracted distribution:” documented in