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Dev builds production AWS app by containerizing frontend and backend before cloud setup

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A developer working on a production-grade AWS infrastructure project chose to containerize the application before configuring the VPC, prioritizing environment consistency. Separate Dockerfiles were written for the Node.js backend and the React frontend, with the backend using a node:22-slim image to support SQLite3 compilation dependencies. The frontend uses a multi-stage Docker build, compiling assets in Node and serving them via a lightweight Nginx container, which also handles API routing as a reverse proxy. Docker Compose was used to orchestrate all three services — frontend, backend, and a PostgreSQL database — with health checks ensuring the database is ready before the backend starts. This containerized setup is designed to integrate smoothly with CI/CD pipelines such as GitHub Actions without requiring Node to be pre-installed on the runner.

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