+ echo 'build-image: Building rancher/os-rootfs:fcdc9ca4'
build-image: Building rancher/os-rootfs:fcdc9ca4
+ '[' -x images/00-rootfs/prebuild.sh ']'
+ images/00-rootfs/prebuild.sh
+ dapper -d --build -f images/00-rootfs/Dockerfile -- -t rancher/os-rootfs images/00-rootfs
DEBU[0000] Building os:master using images/00-rootfs/Dockerfile
FATA[0000] pattern contains path separator
+ '[' 1 '!=' 42 ']'
+ exit 1
FATA[0025] exit status 1
make: *** [Makefile:11: default] Error 1