Ubuntu 16.04 - > ERROR: Couldn't connect to Docker daemon - you might need to run `docker-machine start default`

Question

I am getting error on ubuntu 16.04

\"ERROR: Couldn\'t connect to Docker daemon - you might need to run docker- machine start default. \"

Answer 1

We need to restart the docker

$ sudo service docker restart

click here

Answer 2

in my case , sometime you just need to use "sudo docker-compose up"

Answer 3

After

sudo snap install docker

Following command worked for me

docker-compose --verbose up -d