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Docker Image Push and Pull

5 minutes 5 Questions

Docker Image Push and Pull refers to the process of uploading (push) and downloading (pull) Docker container images in Amazon ECR. After successfully authenticating with Amazon ECR, developers can use standard Docker commands to push and pull images. By pushing Docker images to Amazon ECR, users ca…

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AWS Certified Solutions Architect - Docker Image Push and Pull Example Questions

Test your knowledge of Docker Image Push and Pull

Question 1

A developer prepared a local Docker image and desires to push it to Amazon ECR. They authenticated their Docker client and created a repository, but forgot the URL of the repository. What command do they use to obtain the URL?

Correct Answer: aws ecr describe-repositories

The 'aws ecr describe-repositories' command retrieves metadata and the repositoryUri for each repository. This command will provide the URL that the developer needs to push the Docker image.

Question 2

A Solutions Architect performs a build on a Dockerfile and wants to verify if the image build was successful. Which command should they use to list the Docker images present locally?

Correct Answer: docker images

To view the Docker images present locally, the 'docker images' command provides a list with details. The Architect can verify the presence of the newly built image in the list.

Question 3

An application is containerized with Docker and deployed on an EC2 instance. The Solutions Architect needs to update the application by pulling a new Docker image from ECR. Which command should the Architect use?

Correct Answer: docker pull

To update the containerized application with a new Docker image, the Architect needs to use the 'docker pull' command followed by the repository URI. This command will pull the new image from the Amazon ECR repository onto the EC2 instance.

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