I have the following problem: I have to import an existing ubuntu system as a docker container. I have created a tar from the original system and imported with docker import successfully. The image is running, but when I do a system update grub2 installation fails because grub can not identfy my image as a container.
systemd-detect-virt --container returns none instead of docker
How can I make the container identfy itself as a docker container, what package do I have to install?
Thanks a lot for any suggestions!