Q. What is the purpose of the ONBUILD instruction in a Dockerfile?

  • (A) To trigger instructions when the image is used as a base for another image
  • (B) To define the base image
  • (C) To specify the working directory
  • (D) To copy files into the container
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✅ Correct Answer: (A) To trigger instructions when the image is used as a base for another image
Explanation: The ONBUILD instruction triggers commands when the image is used as a base for another image.

Published by Vikash Gupta ⭐ 33.56K Points at 13-Feb-2025 09:43 pm in Docker

Explanation by: Vikash Gupta
The ONBUILD instruction triggers commands when the image is used as a base for another image.

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