Create new Image using commit command in Docker

Image is a file that defines the tools that will be installed when we create a container from that image. We can create an image from a container that has changes when it is created from another base image, or we can also create an Image using the Dockerfile. In this tutorial, I will guide you the first way!

Assuming that I now have an Image of Ubuntu 16.04, I want a new Image that when running the Container from this new Image, Git will be preset.

OK, now I will run a new container from Image Ubuntu 16.04 using -i, -t options to be able to access this container after creating it.

Create new Image using commit command in Docker

To install Git for this new container, first you need to run the following command to update the repositories of Ubuntu 16.04:

Now, we will install Git by running the following command:

Result:

Create new Image using commit command in Docker

OK, so we have Git installed. Now exit this container with the exit command.

After we exit, we can check the list of containers that we have run using the command

Create new Image using commit command in Docker

As you can see, the container I just ran was created 15 minutes ago called laughing_thompson. Now, I will use the commit command to create an image from this container.

The structure of the commit statement is as follows:

In this example, we will run the following statement:

Result:

Create new Image using commit command in Docker

Check the images in our Repository, you will see the Image we just created.

Create new Image using commit command in Docker

Now if you create a new container from this new image, you will see that the Git tool is already installed.

Create new Image using commit command in Docker

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