Dockerizing Next.js for Production — Multi-Stage Done Right
Standalone output first
Enable output: standalone to shrink images from 1GB+ to ~200MB — only traced files ship. Multi-stage builds separate deps, builder, and runner stages so production images contain zero toolchains.
Layer caching order
Copy lockfiles before source so dependency layers cache across code changes. Reorder COPY instructions by change frequency: deps (rare), public assets (occasional), source (constant). CI build times drop 50–70%.
Runtime hardening
Non-root user, read-only filesystem where possible, HEALTHCHECK endpoints, and memory limits matching Node's --max-old-space-size. One process per container; horizontal scaling via orchestration, never bigger boxes.
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Written by DevOps Engineer
Specialized engineering teams at Omnetra focus on writing high-performance code, ensuring API security, and optimizing layouts for client success.