You must have Docker installed and running before you can install
If you don't have Docker running, follow the
Docker Engine installation guide
Test your Docker installation by running the
hello-world image. You should see something like this:
$ docker run hello-world Hello from Docker! This message shows that your installation appears to be working correctly.
Once this is working you're ready to install maelstrom.
Recent Docker installations create a
docker group. Members of this group can connect to the local Docker daemon
without being root.
If you try the above
docker run hello-world and get a permission denied error you might try running the command
sudo docker run hello-world. If this works, you'll need to run
maelstromd via sudo as well since it
needs the ability to communicate with the Docker daemon.