How to Create Docker Containers from Docker Images? A Step-By-Step Guide
To create docker containers from a docker image, first we must have a docker image. We can get our required docker image either from Dockerhub, or can create our custom docker image by using a Dockerfile. After we have our required docker image, follow the following steps:
Step 1. List all the docker images, that are available locally. Enter the following command to do this:
Command
docker images
Output
Step 2: Copy the image ID of the target image, that we want to contanerize. Image ID is a unique ID of any docker image. Let’s say we want to create a container from ubuntu image with latest tag. We will copy the image ID of ubuntu image present at 2nd position, which is – 3b418d7b466a.
Step 3: The third and the last step is to start a container for our target image. The docker run command is used to do this. Below is the syntax of command:
Command
docker run <options> <image_ID>
The <options> for the run command are explained in docker’s documentation, you can check it out from here – https://docs.docker.com/engine/reference/run
Command
docker run -it 3b418d7b466a
Output
How To Create a Docker Container from an Existing Image?
Docker is an open-source software, that is used to contanerize our applications. Containerizing applications makes deployment a lot easier. For containerizing applications, docker uses Docker images, which act like templates for making containers. Today we will learn how to create a container from an existing Docker image, but before that, let’s take a quick look at What are Docker images and containers.
Table of Content
- What is Docker Image?
- What are Docker Containers?
- What is Docker Container Create?
- Description
- Docker Container Create Options
- Examples of Docker Container Create
- How to Build A Docker Container Image? A Step-By-Step Guide
- How to Create Docker Containers from Docker Images? A Step-By-Step Guide
- Example of Running a Nodejs Web App Docker Image
- Build, Name and Tag the Docker Container Images
- Running And Viewing Docker Containers
- TroubleShooting of Docker Container Create
- Docker Container Create – FAQs