Detect cgroup v2 on "checkInContainer" #7304
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What kind of change does this PR introduce? (check at least one)
Does this PR introduce a breaking change? (check one)
Problem:
Updates from Ubuntu 20.xx to 22.xx break a frontend running inside a docker.
Other information:
Ubuntu 22.04 released April 21, 2022 use new config for systemd
systemd.unified_cgroup_hierarchy=1. This config changes how docker use users group to v2: https://docs.docker.com/config/containers/runmetrics/#enumerate-cgroupsRight now, vue-cli does not detect cgroup v2, and this PR aims to detect a new cgroup config based on the existence of file
/sys/fs/cgroup/cgroup.controllers.