What command would be used to build an image from a Dockerfile located in the current directory and tag it as my-custom-image:1?

Prepare for the Docker Certified Associate test with our comprehensive quizzes that include key questions and detailed explanations. Ace your certification!

The command to build a Docker image from a Dockerfile located in the current directory and tag it as "my-custom-image:1" is "docker build -t my-custom-image:1 .".

The "docker build" command is specifically designed for creating images from a Dockerfile. The "-t" flag allows you to tag the image with a name and optionally a version, which in this case is "my-custom-image:1". The dot at the end signifies the build context, which is the current directory, where Docker will look for the Dockerfile and any other files to include in the image.

Using "docker create" is incorrect because it is intended for creating a container from an image that already exists, not for building an image. Similarly, "docker run" is used to create and start a container from an image but does not correlate to the image-building process. Lastly, "docker exec" is used to run a command in an already running container, and therefore, cannot be used to build a new image.

In summary, option A correctly utilizes the Docker command structure for building and tagging an image, making it the appropriate choice for this scenario.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy