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Dockerfile Cheat Sheet/Use multi-stage build

Build artifacts in one stage and copy only runtime output into the final stage.

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Section: Common Patterns

Use multi-stage build

dockerfile
dockerfile
FROM node:20-alpine AS build
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

FROM nginx:alpine
COPY --from=build /app/dist /usr/share/nginx/html
Explanation

Multi-stage builds keep runtime images smaller and cleaner.

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