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

  • (A) To publish a container's port to the host
  • (B) To specify which ports the container will listen on
  • (C) To open a firewall port
  • (D) To map a container port to a host port
💬 Discuss
✅ Correct Answer: (B) To specify which ports the container will listen on
Explanation: The 'EXPOSE' instruction in a Dockerfile informs Docker that the container listens on the specified network ports at runtime. It does not publish the port to the host.

Published by Rakesh Kumar ⭐ 28.44K Points at 13-Feb-2025 10:01 pm in Docker

Explanation by: Rakesh Kumar
The 'EXPOSE' instruction in a Dockerfile informs Docker that the container listens on the specified network ports at runtime. It does not publish the port to the host.

💬 Discussion

📊 Question Analytics

👁️
169
Total Visits
📽️
2 y ago
Published
🎖️
Rakesh Kumar
Publisher
📈
89%
Success Rate