This ensures your user is running with the correct permissions. To create the docker group and add your user: On how this impacts security in your system, see Docker Daemon Attack Warning: The docker group is equivalent to the root user For details Makes the ownership of the Unix socket read/writable by the docker group.

To avoid having to use sudo when you use the docker command, create a Unix For this reason, docker daemon always runs as the root user. That Unix socket is owned by the user root and other users can access it with The docker daemon binds to a Unix socket instead of a TCP port. Make sure your existing yum packages are up-to-date. Log into your machine as a user with sudo or root privileges.

You use the same installation procedure for all versions of CentOS.

To try something more ambitious, you can run an Ubuntu container with: The Docker daemon streamed that output to the Docker client, which sent it The Docker daemon created a new container from that image which runs theĮxecutable that produces the output you are currently reading.Ĥ. (Assuming it was not already locally available.)ģ. The Docker daemon pulled the 'hello-world' image from the Docker Hub. The Docker client contacted the Docker daemon.Ģ. To generate this message, Docker took the following steps:ġ. This message shows that your installation appears to be working correctly. Status: Downloaded newer image for hello-world:latest Important: image verification is a tech preview feature and should not be relied on to provide security.ĭigest: sha256:aa03e5d0d5553b4c3473e89c8619cf79df368babd1.7.1cf5daeb82aab55838d Hello-world:latest: The image you are pulling has been verified. Unable to find image 'hello-world:latest' locally

Docker installation on rhel 7