Error running inside docker

[nunofernandes]

Hi.. I'm getting the following error when running inside docker when I stop the service.

OSError: [Errno 16] Device or resource busy: '/etc/hosts.local-cname-backup' -> '/etc/hosts'

/etc/hosts is mounted by the docker daemon so the rename will fail.

# mount | grep hosts
/dev/nvme0n1p1 on /etc/hosts type xfs (rw,relatime,seclabel,attr2,inode64,noquota)

A good way of fixing could be something like detecting if /etc/hosts is mounted and if do, just do something like a cat over the file (like the pseudo code):

cat /etc/hosts.local-cname-backup > /etc/hosts
rm  /etc/hosts.local-cname-backup