Using the example at https://coreos.com/blog/rkt-0.10.0-with-new-api-service/
$ sudo bash nginx1.sh
Downloading quay.io/listhub/alpine: [==========================] 2.63 MB/2.63 MB
begin: extracttar error: exit status 1, output: error extracting tar: error extracting tarball: lchown /rootfs/bin/bbsuid: operation not permitted
run: apk not found in any of: [/usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin]
run: apk not found in any of: [/usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin]
write: open .acbuild/currentaci/rootfs/bin/bbsuid: operation not permitted