Spring Boot - Docker and Deployment
Which Dockerfile instruction is used to expose the port your Spring Boot application listens on?
Which Dockerfile instruction is used to expose the port your Spring Boot application listens on?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Dockerfile instructions for ports
The correct instruction to declare a port is EXPOSE followed by the port number.Step 2: Confirm the port number for Spring Boot
Spring Boot defaults to port 8080, so EXPOSE 8080 is correct.Final Answer:
EXPOSE 8080 -> Option AQuick Check:
Expose port instruction = EXPOSE [OK]
Quick Trick: Use EXPOSE to declare container ports [OK]
Common Mistakes:
- Using PORT or OPEN which are invalid Dockerfile commands
- Forgetting to expose the port
Master "Docker and Deployment" in Spring Boot
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