Given this Dockerfile snippet, what will Docker report as the container health status if the Spring Boot app's /actuator/health endpoint returns HTTP 500?

medium📝 component behavior Q13 of 15

Spring Boot - Docker and Deployment

Given this Dockerfile snippet, what will Docker report as the container health status if the Spring Boot app's /actuator/health endpoint returns HTTP 500?

HEALTHCHECK CMD curl --fail http://localhost:8080/actuator/health || exit 1

Ahealthy

Bunknown

Cstarting

Dunhealthy

Step-by-Step Solution

Solution:

Step 1: Understand curl --fail behavior on HTTP 500
The curl --fail option causes curl to exit with error on HTTP status codes 400 or above.
Step 2: Connect curl failure to Docker health status
Since curl fails, the HEALTHCHECK command exits with 1, marking container as unhealthy.
Final Answer:
unhealthy -> Option D
Quick Check:
HTTP 500 triggers curl failure = unhealthy [OK]

Quick Trick: curl --fail fails on HTTP 500, so container becomes unhealthy [OK]

Common Mistakes:

Assuming HTTP 500 still means healthy
Confusing 'starting' with unhealthy status
Thinking Docker ignores health check failures

Master "Docker and Deployment" in Spring Boot

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Perf

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions

More Spring Boot Quizzes

Given this Dockerfile snippet, what will Docker report as the container health status if the Spring Boot app's /actuator/health endpoint returns HTTP 500?

Step 1: Understand curl --fail behavior on HTTP 500

Step 2: Connect curl failure to Docker health status

Final Answer:

Quick Check:

Want More Practice?