CRUD App (Dockerized)

This repository contains a Spring Boot backend and a React frontend. Docker and Docker Compose are used to build and run both services together with a PostgreSQL database.

Ports

• Backend: http://localhost:8080
• Frontend: http://localhost:3000 (served by nginx in the container)

Quick start (Windows cmd.exe)

1. Ensure Docker Desktop is installed and running.
2. From the repo root (where docker-compose.yml is located), run:

docker compose build
docker compose up

Or, if using the legacy CLI:

docker-compose build
docker-compose up

Notes

• Environment variables are stored in .env at the repo root. Change them there if you need different credentials.
• The Postgres data is persisted in the Docker volume postgres_data.
• The backend application.properties reads Spring datasource values from environment variables, so the container will use the values from .env.

Troubleshooting

• If the backend fails to connect to Postgres, check logs:

docker compose logs backend

• To drop and recreate the DB volume (destructive):

docker compose down -v
docker compose up --build

Want changes?

• I can add a Kubernetes manifest, switch the frontend to use the React dev server for hot reload, or add automatic DB migrations. Tell me which you'd like next.