- Lab
-
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Committing a New Container Image
In this hands-on lab scenario, you will be connecting to and modifying a Docker container. In addition, you will save the container changes to a new image and start a new container from the newly created image. Upon completion of this lab, you will know how to make small modifications to an existing container and save those changes as an image for future use.

Lab Info
Table of Contents
-
Challenge
Modify a Container
- Verify the container
web-1
is running. - Connect to the container.
- Add the message "A guru was here in this container" to the file
/usr/share/nginx/html/index.html
.
- Verify the container
-
Challenge
Commit the Modified Container
Commit the changes to the container
web-1
to a new image namedserver-1:5000/my-web:v1
. -
Challenge
Verify the Container Changes
- Start a new container named
web-2
using the imageserver-1:5000/my-web:v1
. Map container port80
to host port8080
. - Using
curl
and a web browser, verify your changes are present onweb-2
.
- Start a new container named
About the author
Real skill practice before real-world application
Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.
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All labs have detailed instructions and objectives, guiding you through the learning process and ensuring you understand every step.
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On average, you retain 75% more of your learning if you take time to practice. Hands-on labs set you up for success to make those skills stick.