Questions and Answers
What are Docker images?
How can Docker images be obtained?
What is a Dockerfile used for?
What is the purpose of the first step in creating a Docker image?
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What command is used to build a Docker image?
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What is the purpose of the third step in creating a Docker image?
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What command is used to start a container based on a Docker image?
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Study Notes
- Docker images are pre-built packages that contain everything needed to run an application.
- Images can be downloaded from public or private registries, or created locally.
- Custom Docker images can be created to add value to applications.
- A Dockerfile is used to define the image.
- The first step is to create a simple Docker image that runs a simple web server.
- The second step is to add custom software to the Docker image.
- The third step is to use environment variables in the Docker image to customize its behavior.
- The
nginx
web server andcurl
utility are used as examples in the lab. - The
docker build
command is used to build the Docker image. - The
docker run
command is used to start a container based on the Docker image.
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Description
Test your knowledge on Docker images and how to create custom ones using a Dockerfile. Learn about the docker build
and docker run
commands, as well as how to use environment variables to customize your images. This quiz covers everything from simple web servers to adding custom software to your Docker images. Get ready to dive into the world of Docker and take your application deployment to the next level.