Docker container run vs. RUN is an image build step, the state of the container after a RUN command will be committed to the container image. They share your host's kernel and virtualize at a software level. You can restart a stopped container with all its previous changes intact using docker start. You can create N clones of the same image. Each container provides an isolated environment similar to a virtual machine (VM). When you execute docker run, the container process that runs is isolated in that it has its own file system, its own networking, and its own isolated process tree separate from the host. 2. In this tutorial, we’ll see the run and start commands and highlight how they’re different while going through some practical examples. CMD is the command the container executes by default when you launch the built image. A Dockerfile can have many RUN steps that layer on top of one another to build the image. The host may be local or remote. Use docker ps -a to view a list of all containers, including those that are stopped. Docker creates packaged applications called containers. The command is: docker run IMAGE_ID and not docker run CONTAINER_ID; Start: Launch a container previously stopped. Docker provides a useful CLI to interact with a container. Docker’s run command is a combination of its create and start commands. docker container run: container is the object; run is the command to be executed by Docker Daemon. The docker run command runs a command in a new container, pulling the image if needed and starting the container. This page details how to use the docker run command to run containers. Overview. Run a Container. Run: create a new container of an image, and execute the container. Unlike VMs, Docker containers don't run a full operating system. Run: create a new container of an image, and execute the container. 1. . ukg onf nqdv tpboh iwl hvog vyzky eyszwen egd hitqeiv