Docker 28.x packages are not available for recent Ubuntu releases
(e.g. 26.04/plucky) in the official Docker APT repo. Keep installing
the latest Docker and rely on daemon.json to disable the containerd
snapshotter and set a conservative nofile ulimit for rootless mode.
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>