![[Docker] Using Docker Multi-Stage Build to Make Image Smaller](/content/images/size/w2000/2021/10/territory-container-freight-yard-lot-metal-containers-storing-goods_116124-498.jpg)
In this article, we using nextjs to present how make image smaller
No multi-stage Dockerfile
FROM node:12.16.1-alpine
WORKDIR /app
COPY ./package.json ./
COPY ./package-lock.json ./
COPY ./ ./
RUN npm install
RUN npm run build
EXPOSE 3001
CMD [ "npm", "run", "start" ]Using multi-stage Dockerfile
FROM node:12.16.1-alpine AS nodeModuleBuilder
WORKDIR /app
COPY ./package.json ./
COPY ./package-lock.json ./
RUN npm install --only=production
# ---------
FROM node:12.16.1-alpine AS codeBuilder
WORKDIR /app
COPY ./package.json ./
COPY ./package-lock.json ./
COPY ./ ./
RUN npm install
RUN npm run build
# ---------
FROM node:12.16.1-alpine AS runtime
# set workspace
WORKDIR /app
# copy binary from builder stage
COPY --from=codeBuilder /app/dist ./
COPY --from=nodeModuleBuilder /app/node_modules ./node_modules
EXPOSE 3001
CMD [ "node", "main.js" ]