How To Install Docker on CentOS 7

Step 1: Installation of Docker


As a matter of best practice we’ll update our packages:

yum -y update


Now let’s install Docker by installing the docker-io package:

yum -y install docker docker-registry


Step 2: Start Docker and Make Sure Docker Starts on Boot


Set the Docker service to start at boot:

systemctl enable docker.service


Then start the Docker service:

systemctl start docker.service


And verify your work by checking the status of ProFTPD:

systemctl status docker.service


Step 3: Download a Docker Container

Let’s begin using Docker! Download the fedora Docker image:

docker pull fedora


Step 4: Run a Docker Container


Now, to setup a basic fedora container with a bash shell, we just run one command. docker run will run a command in a new container, -i attaches stdin and stdout, -t allocates a tty, and we’re using the standard fedora container.

docker run -i -t fedora /bin/bash


That’s it! You’re now using a bash shell inside of a fedora docker container.

To disconnect, or detach, from the shell without exiting use the escape sequence Ctrl-p + Ctrl-q.

There are many community containers already available, which can be found through a search. In the command below I am searching for the keyword centos:

docker search centos

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