sudo apt-get install docker 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  bridge-utils containerd linux-headers-4.4.0-57
  linux-headers-4.4.0-57-generic linux-image-4.4.0-57-generic
  linux-image-extra-4.4.0-57-generic runc ubuntu-fan
Use 'sudo apt autoremove' to remove them.
The following NEW packages will be installed:
  docker
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
1 not fully installed or removed.
Need to get 12.2 kB of archives.
After this operation, 65.5 kB of additional disk space will be used.
Get:1 http://ir.archive.ubuntu.com/ubuntu xenial/universe amd64 docker amd64 1.5-1 [12.2 kB]
Fetched 12.2 kB in 2s (4,128 B/s)
Selecting previously unselected package docker.
(Reading database ... 254171 files and directories currently installed.)
Preparing to unpack .../docker_1.5-1_amd64.deb ...
Unpacking docker (1.5-1) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up docker-engine (1.13.0-0~ubuntu-xenial) ...
Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.
invoke-rc.d: initscript docker, action "start" failed.
dpkg: error processing package docker-engine (--configure):
 subprocess installed post-installation script returned error exit status 1
Setting up docker (1.5-1) ...
Errors were encountered while processing:
 docker-engine
E: Sub-process /usr/bin/dpkg returned an error code (1)