Docker for DevOps Engineers

#Day16 of #90DaysOfDevopsChallenge

Docker is an open-source platform for developing, packaging and deploying applications in a containerized environment. Containers are lightweight and portable virtual environments that can run on any system that supports Docker.

✅Use the docker run command to start a new container and interact with it through the command line. [Hint: docker run hello-world]

Local system update:

sudo apt-get update

command to check the docker version

use the following command to start Docker

sudo usermod -aG docker $user 
systemctl restart docker

Note: If the permission denied error occurs, use the below command and enter the password.

To check the docker status

systemctl status docker

Use the pull command to download the image

docker pull python

To check all the docker images :

•   docker images
  

  

  Create a container from the above image:

  •   docker run -it <image name> /bin/bash
    

To start a new container and interact with it through the command line, you can use the following command:

    docker run -td --name <cantainer name> -p 80:80 <image name>

To see all the containers:

docker ps -a

✅Use the docker inspect command to view detailed information about a container or image.

docker inspect <container name>

✅Use the docker port command to list the port mappings for a container

docker port <container name >

✅Use the docker stats command to view resource usage statistics for one or more containers.

docker stats <container name>

✅Use the docker top command to view the processes running inside a container

docker top <container name or id>

✅Use the docker save command to save an image to a tar archive

docker save -o <image>.tar <image name>

✅Use the docker load command to load an image from a tar archive

docker load  -i  <image.tar>

Thank you!!