Dockerfile

FROM node:18-alpine AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

COPY package.json yarn.lock ./
ARG GITHUB_TOKEN

# install and cache app dependencies
RUN echo //npm.pkg.github.com/:_authToken=$GITHUB_TOKEN >> ~/.npmrc
RUN echo @taraldefi:registry=https://npm.pkg.github.com >> ~/.npmrc
RUN yarn install --frozen-lockfile

# Removing the github token from npmrc file in below line
RUN echo > ~/.npmrc

FROM node:18-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

ENV NEXT_TELEMETRY_DISABLED 1

RUN yarn build

FROM node:18-alpine AS runner
WORKDIR /app

ENV NODE_ENV production
ENV NEXT_TELEMETRY_DISABLED 1

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

COPY --from=builder --chown=nextjs:nodejs /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next ./.next
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/next.config.js ./next.config.js

USER nextjs

EXPOSE 4200

ENV PORT 4200

CMD ["npm", "start"]