Import qcow2 image to docker hub

I have prebuild ubuntu14.0.4.1 qcow2 image . I followed the following instruction for importing it to docker hub
Used virt-tar-out to convert it tar file
sudo virt-tar-out -a /tmp/ubuntu.qcow2 / - | gzip --best > ubuntu.tar.gz
cat ubuntu.tar.gz | sudo docker import - repo:tag
I get the image id

Now when I try run a conatiner from the image I get following error
Error response from daemon: No command specified

If the give teh command along with docker run command
exec: “/bin/sh”: stat /bin/sh: no such file or directory
Error response from daemon: Cannot start container c2d0ce1a4bfd9f4784edad53b3669e736f1442b2ba208294b00f242d07dc2208: [8] System error: exec: “/bin/sh”: stat /bin/sh: no such file or directory
None of the commands are working.

Thanks
Preeti

My ignorant guess will be that your image is expected to be booted into, while docker doesn’t really “boot” images (they are stored in booted format).