Production-Ready Dockerfiles for NestJS: Caching, Multi-Stage Builds & Security
For developers at Sadeem informatique
Image source: NestJS official assets.
Getting Docker working with NestJS is easy. Getting it right with proper layer caching, deterministic installs, Prisma client generation, and a secure runtime image takes a bit more structure. This guide walks through each Dockerfile decision so you can adapt it safely to your own services.
By the end, you'll have a Dockerfile that:
- Maximises Docker layer caching so rebuilds are fast
- Never reinstalls
node_moduleswhen only application code changes - Generates Prisma client in the build stage
- Uses multi-stage builds to keep the final image lean
- Runs as a non-root user in production
Even if Dockerfile ownership sits mostly with DevOps, backend developers should still understand container build fundamentals. It makes debugging CI/CD issues faster and keeps deployment constraints visible during feature work.
This guide targets a production Dockerfile. For day-to-day local development and testing, use a separate Dockerfile.local tailored for fast iteration (for example, bind mounts, hot reload, and dev dependencies).