As noted inline, this works around potential issues by being a strong
indication you are in a container (e.g. [1]). Since nothing should be
changing anything on the host/build system, this is a generically
safer way to operate.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1975588
Change-Id: Ic6802c4ffc2e825f129af10717860a2d1770fe80
