Fix selinux issue w/ docker volume in sdist builder
Fix selinux issue w/ docker volume in sdist builder

See https://www.projectatomic.io/blog/2015/06/using-volumes-with-docker-can-cause-problems-with-selinux/

snahelou/awx,snahelou/awx,snahelou/awx,wwitzel3/awx,wwitzel3/awx,snahelou/awx,wwitzel3/awx,wwitzel3/awx