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Dev Tutorial: Running PostgreSQL in Docker for a Backend Project

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A developer tutorial published on DEV Community walks through setting up a Node.js backend project inspired by PicPay's technical challenge. The guide explains why Docker is preferred over a local PostgreSQL installation, citing easier setup, isolation, and reproducibility. A docker-compose.yml file is configured to run PostgreSQL 16 as a containerized service, with environment variables defining the database user, password, and name. Key Docker Compose fields such as ports, volumes, and restart policies are explained in plain terms for beginners. The tutorial concludes by running the container in detached mode using docker compose up -d, with more steps promised in a follow-up post.

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Dev Tutorial: Running PostgreSQL in Docker for a Backend Project · ShortSingh