Preparing to unpack .../bridge-utils_1.5-9ubuntu1_amd64.deb ...
Unpacking bridge-utils (1.5-9ubuntu1) ...
Selecting previously unselected package runc.
Preparing to unpack .../runc_1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.1_amd64.deb ...
Unpacking runc (1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.1) ...
Selecting previously unselected package containerd.
Preparing to unpack .../containerd_0.2.5-0ubuntu1~16.04.1_amd64.deb ...
Unpacking containerd (0.2.5-0ubuntu1~16.04.1) ...
Selecting previously unselected package docker.io.
Preparing to unpack .../docker.io_1.13.1-0ubuntu1~16.04.2_amd64.deb ...
Unpacking docker.io (1.13.1-0ubuntu1~16.04.2) ...
Selecting previously unselected package ubuntu-fan.
Preparing to unpack .../ubuntu-fan_0.12.8~16.04.2_all.deb ...
Unpacking ubuntu-fan (0.12.8~16.04.2) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for systemd (229-4ubuntu21.1) ...
Processing triggers for ureadahead (0.100.0-19) ...
ureadahead will be reprofiled on next reboot
Setting up bridge-utils (1.5-9ubuntu1) ...
Setting up runc (1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.1) ...
Setting up containerd (0.2.5-0ubuntu1~16.04.1) ...
Setting up docker.io (1.13.1-0ubuntu1~16.04.2) ...
addgroup: The group `docker' already exists as a system group. Exiting.
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.
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Mon 2018-03-26 15:53:34 IST; 5ms ago
     Docs: https://docs.docker.com
  Process: 15211 ExecStart=/usr/bin/dockerd -H fd:// $DOCKER_OPTS (code=exited, status=1/FAILURE)
 Main PID: 15211 (code=exited, status=1/FAILURE)

Mar 26 15:53:34 lakshay-sof systemd[1]: Starting Docker Application Containe....
Mar 26 15:53:34 lakshay-sof dockerd[15211]: unable to configure the Docker d...)
Mar 26 15:53:34 lakshay-sof systemd[1]: docker.service: Main process exited,...E
Mar 26 15:53:34 lakshay-sof systemd[1]: Failed to start Docker Application C....
Mar 26 15:53:34 lakshay-sof systemd[1]: docker.service: Unit entered failed ....
Mar 26 15:53:34 lakshay-sof systemd[1]: docker.service: Failed with result '....
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: error processing package docker.io (--configure):
 subprocess installed post-installation script returned error exit status 1