Running first Docker Container

Once we install Docker and make sure it is up and running we can start running our first Docker Container. Let us run the hello-world Docker container, this container is present in the DockerHub. We will use the docker run command to run the container as follows.

$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete
Digest: sha256:7f0a9f93b4aa3022c3a4c147a449bf11e0941a1fd0bf4a8e6c9408b2600777c5
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

Once we execure the command the Docker Engine tries to locate the hello-word image in the local system, since we don’t have the hello-world image it automatically downloads the hello-world image from DockerHub, once downloaded it activates the image to span up the container and displays the message Hello from Docker!