Installing Docker on CentOS 7
Linux containers, in short, contain applications in a way that keep them isolated from the host system that they run on. Containers allow a developer to package up an application with all of the parts it needs, such as libraries and other dependencies, and ship it all out as one package. And Docker Inc. is the most popular containerizer today. In this post, we’re going to install Docker CLI on a CentOS 7 system.
Uninstall old versions (if any)
sudo yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine
Installing Docker-CE
SETTING UP THE REPOSITORY:
Install the required packages. yum-utils provides the yum-config-manager utility, and device-mapper-persistent-data and lvm2 are required by the devicemapper storage driver.
sudo yum install docker-ce docker-ce-cli containerd.io
Use the following command to set up the stable repository.
sudo yum install docker-ce docker-ce-cli containerd.io
Installing Docker Engine
sudo yum install docker-ce docker-ce-cli containerd.io
Start Docker Service
sudo service docker start
Setting up Docker Service on Startup
sudo systemctl enable docker
You can test if docker is installed by using the following command
sudo docker version
If you would like to use Docker as a non-root user, you should now consider adding your user to the “docker” group with something like:
sudo usermod -aG docker $USER
For further references follow the User Guide.
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That’s all folks! Happy coding…
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