Configure the docker repository with yum
$ sudo tee /etc/yum.repos.d/docker.repo <<-'EOF' > [dockerrepo] > name=Docker Repository > baseurl=https://yum.dockerproject.org/repo/main/centos/7/ > enabled=1 > gpgcheck=1 > gpgkey=https://yum.dockerproject.org/gpg > EOF
Install and start local docker
$ sudo yum install docker-engine $ sudo systemctl enable docker.service $ sudo systemctl start docker
Run a sanity check to see if docker is working properly
$ sudo docker run --rm hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
c04b14da8d14: Pull complete
Digest: sha256:0256e8a36e2070f7bf2d0b0763dbabdd67798512411de4cdcf9431a1feb60fd9
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker Hub account:
https://hub.docker.com
For more examples and ideas, visit:
https://docs.docker.com/engine/userguide/
To allow the user to run docker without sudo, create a “docker” group and add yourusername to it.
$ sudo groupadd docker $ sudo usermod -aG docker yourusername
Log out and log back in for the group changes to go into effect. Try it out:
$ docker run --rm hello-world
Enable docker to be run after reboot
$ sudo systemctl enable docker
Install docker-compose
$ sudo -i
# curl -L https://github.com/docker/compose/releases/download/1.9.0/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 600 0 600 0 0 2848 0 --:--:-- --:--:-- --:--:-- 2870
100 7857k 100 7857k 0 0 15.5M 0 --:--:-- --:--:-- --:--:-- 15.5M
# chmod +x /usr/local/bin/docker-compose
# exit
$ logout
Check that docker is running
$ docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES