How to Create a Docker Image from Docker Container? A Step-By-Step Guide
Step 1: Run A Container
- Firstly start a running container in your local docker based on the image you want convert into a new Docker image. Run the container with the following command:
Syntax
docker run [Options] <Container_name> <Container_Image>
Example
docker run -dit --name mycontainer1 ubuntu:latest
Step 2: Commit Changes
Do the changes in your container while it’s running like adding additional packages or configuring settings. Then commit the running container into image using following command:
docker commit <container_id> <new_img_name>
Step 3: Verify the New Image
After once commiting the changes, verify that new docker image by listing all the docker images using following command:
docker images
Step 4: Tag And Push
- Now, if you intrested to move or share this new docker image somewhere else, first host in any container registry. Here we are choosing docker hub.
- Firstly change the tag name of the docker image, by running the following command:
docker tag <new_image_name> <registry_url>/<repository_name>:<tag>
- Push the docker image into the docker hub using the following command:
docker push <registry_url>/<repository_name>:<tag>
How to Create Docker Image?
Docker is a powerful containerization tool that enables developers to package their applications and their dependencies into a single unit called Docker image. The Docker image offers seamless deployment, scalability, and portability. In this article, I will make sure that you understand what is docker and guide you through the steps to create a Docker image.
Table of Content
- What is Docker?
- What is Docker Image?
- Why Create Docker Images?
- How to Create Docker Image With Dockerfile: A Step-By-Step Guide
- How to Create A Base Image Using Scratch? A Step-By-Step Guide
- How to Create a Full Image Using tar?
- How to Optimize Your Docker Image Size?
- How to Host Your Docker Image?
- Examples of Docker Commands for Creating a Dockerfile
- Dockerfile vs Docker Image Vs Container
- Docker Image Commands
- Key Commands of Docker Image And Docker Container
- Examples of Docker Image UseCases
- How To Create A Docker Image On Docker Desktop: A Step-By-Step Guide
- How to Create a Docker Image from Docker Container? A Step-By-Step Guide
- Conclusion
- Create Docker Image – FAQs