Unable to start Docker Service in Ubuntu 16.04

https://stackoverflow.com/questions/37227349/unable-to-start-docker-service-in-ubuntu-16-04?answertab=active#tab-top

So here’s a permanent fix that works for systemd (Ubuntu 15.04 and higher):

create a new file /etc/systemd/system/docker.service.d/overlay.conf with the following content:

[Service]
ExecStart=
ExecStart=/usr/bin/docker daemon -H fd:// -s overlay

2. flush changes by executing:

sudo systemctl daemon-reload

3. verify that the configuration has been loaded:

systemctl show --property=ExecStart docker

4. restart docker:

sudo systemctl restart docker

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