Dockerfile

# Get NPM packages
FROM node:14.19.1-alpine as deps
ENV YARN_VERSION 1.22.17
ENV NODE_ENV production

RUN apk add --no-cache libc6-compat
RUN apk add --no-cache --virtual .build-deps-yarn curl \
    && curl -fSLO --compressed "https://yarnpkg.com/downloads/$YARN_VERSION/yarn-v$YARN_VERSION.tar.gz" \
    && tar -xzf yarn-v$YARN_VERSION.tar.gz -C /opt/ \
    && ln -snf /opt/yarn-v$YARN_VERSION/bin/yarn /usr/local/bin/yarn \
    && ln -snf /opt/yarn-v$YARN_VERSION/bin/yarnpkg /usr/local/bin/yarnpkg \
    && rm yarn-v$YARN_VERSION.tar.gz \
    && apk del .build-deps-yarn

WORKDIR /app
COPY package.json yarn.lock ./
RUN yarn --frozen-lockfile --prod

FROM node:14.19.1-alpine as builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN yarn build

FROM node:14.19.1-alpine as runner
WORKDIR /app

ARG APP_ENV=production
ARG NODE_ENV=production

ENV APP_ENV=${APP_ENV} \
    NODE_ENV=${NODE_ENV}
ENV PATH=/app/node_modules/.bin:$PATH

RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# You only need to copy next.config.js if you are NOT using the default configuration
COPY --from=builder /app/next.config.js ./
COPY --from=builder /app/public ./public
COPY --from=builder /app/package.json ./package.json

# Automatically leverage output traces to reduce image size 
# https://nextjs.org/docs/advanced-features/output-file-tracing
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs

ENV PORT 3000

EXPOSE ${PORT}

CMD ["node", "server.js"]