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Shiva Ram • 30.44K Points
Instructor I 

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

  • (A) To open a port on the host machine
  • (B) To document which ports are used by the container
  • (C) To publish a container's port to the host
  • (D) To map a container's port to a specific host port
  • Correct Answer - Option(B)
  • Views: 18
  • Filed under category Docker
Explanation by: Shiva Ram 
The EXPOSE instruction documents which ports are intended to be used by the container.

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