Add libatomic to the Fedora docker image so it can link binaries that
use __atomic_* functions.  Also explicitly add libatomic1 to Debian
docker images as it is needed in particular on non-x86 architectures
for run-time linkage.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Reviewed-by: Simon Ser <simon.ser@intel.com>