All Docker operations had to be conducted by a user (or users) with the same full root authority.

Building containers led to security vulnerabilities.

If there is any failure in the docker daemon, then every child processes are lost its track.

This process owned all the child processes (the running containers).

A single process could be a single point of failure.

You can ask me, what is the problem with it. The Docker command-line interface (CLI) asks the daemon to do this on your behalf. Essentially the Docker daemon does all the work with registries, images, containers, and the kernel. Let us first understand how docker works and we will see how we can overcome the problem of it using podman.īuilding blocks of docker are Docker CLI and Docker Daemon.ĭocker CLI sends the commands to Docker Daemon where Docker Daemon push/pull the image from the registry.ĭaemon makes the copy of images in the local container and maintains it. Unlike a virtual machine, Docker container shares the same Linux kernel as the system. Docker Container is a somewhat like a virtual machine. What is Docker ?ĭocker is a containerization platform where we can package our application with its libraries and dependencies inside the container. Replacing Docker with Podman - Power of Podmanīefore going into the article, we will see what Docker it and How Docker works. we will see the consequences of using it and how we can solve the problem with Podman. while Docker is a buzzword in the tech industry now.

Podman centos 7