Question 1

What issues does this Docker Compose lab present?

Accepted Answer

The lab provides a broken Docker Compose setup where a Node.js API fails to connect to PostgreSQL. You must diagnose and fix networking, environment variable, and service configuration issues to restore connectivity.

Question 2

How long does the Node.js + PostgreSQL debugging lab take?

Accepted Answer

The lab is designed for 55 minutes. This includes reading the existing setup, identifying bugs, fixing configuration files, and validating that the API successfully connects to the database.

Question 3

What skill level is required for this lab?

Accepted Answer

This lab targets junior-level engineers who have basic experience with Docker Compose, Node.js, and PostgreSQL. You should understand container networking and environment variable configuration.

Question 4

How is my work validated in this lab?

Accepted Answer

Automated validation commands check that both containers are running, the Node.js API responds on the correct port, and the database connection is successfully established with proper data retrieval.

Question 5

Can I modify the Node.js application code?

Accepted Answer

The primary focus is on fixing the Docker Compose configuration and environment setup. You should examine all provided files including docker-compose.yml, Dockerfile, and environment configurations.

Fix Node.js + PostgreSQL Docker Compose

Production-Grade Environment

Docker Compose

How this lab maps to your role

Backend Developer

DevOps Engineer

Full-Stack Developer

Site Reliability Engineer

Software Engineer

Technical Assessment (Fix Node.js + PostgreSQL Docker Compose)

When to use this lab

Skills Evaluated

Built for Both Sides

For Recruiters & Hiring Managers

For Professionals & Learners

Frequently Asked Questions

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