Docker Basic Commands

Welcome readers, in this tutorial, we will learn some Docker basic commands. 1. Introduction to Docker In the present world, Docker is an important term: Often used in CI/CD platform that packages and runs the application with its dependencies inside a container Is a standard for Linux Containers A Container is a runtime that runs under any Linux kernel and provides a private machine-like space under Linux 1.1 Docker Terminology Image: Representation of Docker container i.e. a JAR or WAR file in Java Container: Runtime of Docker i.e. a deployed and running Docker image. For example, an executable Spring Boot jar Engine: The code that manages, creates and runs the Docker containers Hub: A public developers registry to distribute their code Repository: A collection of Docker related images i.e. different versions of the same application 1.2 Docker Command Syntax Here’s an example command. Fig. 1: Basic structure 1.3 Need for using Docker For environment replication, while the code runs locally on the machine For numerous deployment phases i.e. Dev/Test/QA For version control and distributing the application’s OS within a team 1.4 Setting up Docker If someone needs to go through the Docker installation, please watch this video. To start with this tutorial, we are hoping that users at present have the Docker installed on a Windows operating system. 2. Docker Basic Commands Tutorial The following table will illustrate the basic commands. Docker Command Syntax Explanation Example docker --version Verify the Docker version docker info View system-wide information for Docker. For example, Docker's root directory, Version, RAM, etc docker run Run the docker image mentioned in the command docker run hello-world docker run -p --name Run the docker image on a given port number and a given name docker run -p 9090:8080 --name hello-world some-name docker start Starts one or more stopped containers docker start hello-world docker stop Stops one or more running containers docker stop hello-world docker restart Restarts a Docker container docker restart 03ca6feb6efa docker build -t Builds the image from the Dockerfile and tags the image docker build -t hello-world:web-app1 . docker pull Pulls the latest version of an image from the Docker Hub. Though developers can specify the particulars of an image docker pull hello-world docker push Pushes the image to the Docker Hub docker push my_username/new-hello-world docker exec -it Access the docker container and run commands in a run-time container docker exec -it mongo docker search Searches the Docker Hub for images docker search centos docker images List all the downloaded Docker images docker ps List all the running Docker containers docker ps -a List all the running and stopped Docker containers docker rm Remove or delete a stopped Docker container. To remove a running container developer can use the -f option in the command docker rm mongo docker rmi Remove or delete the Docker images docker rmi hello-world docker logs To fetch the container logs. Developers can use the -f option in the command to fetch the live logs docker logs -f bead9d5fba90 docker login To log in with your Docker Id to push and pull images from Docker Hub docker logout To log out from Docker Hub docker volume create To create a volume that Docker container will use to store the data docker volume create postgres-data docker volume ls To check if the volume got created or not Try out these commands in your development environment to practice and learn. 3. Summary That is all for this tutorial and I hope the tutorial will serve you to understand the basic Docker commands. Happy Learning and do not forget to share! 4. Download the source code DownloadYou can download the full source code of this example here: Docker Basic Commands Last updated on Feb. 27th, 2022

Docker Basic Commands

Thank you!

Thank you!

Thank you!

3. Summary

4. Download the source code

Thank you!

Related Articles