Beginner
Docker & Containers
Q23 / 100
What is the purpose of the "EXPOSE" instruction in a Dockerfile?
Correct! Well done.
Incorrect.
The correct answer is B) It documents which ports the container listens on at runtime, serving as informational metadata (does not by itself publish the port)
B
Correct Answer
It documents which ports the container listens on at runtime, serving as informational metadata (does not by itself publish the port)
Explanation
EXPOSE is documentation/metadata about which ports the application uses; actually publishing a port to the host still requires the "-p" flag on "docker run".
Progress
23/100