Dockerfile

# syntax=docker/dockerfile:1.2
FROM node:14-alpine AS deps
WORKDIR /app

COPY .yarn .yarn
COPY ./package.json ./yarn.lock .yarnrc.yml ./
RUN yarn install --immutable && yarn cache clean

# ---
FROM node:14-alpine AS builder

ENV NEXT_TELEMETRY_DISABLED=1
WORKDIR /app

COPY . .
COPY --from=deps /app/.yarn ./.yarn
COPY --from=deps /app/node_modules ./node_modules
RUN yarn build

# ---
FROM node:14-alpine AS runner

WORKDIR /app
ENV NODE_ENV production
ENV NEXT_TELEMETRY_DISABLED=1

RUN apk add --no-cache iputils tini

COPY --from=deps /app/.yarn ./.yarn
COPY --from=deps /app/package.json ./package.json
COPY --from=deps /app/node_modules ./node_modules
COPY --from=builder /app/next.config.js ./
COPY --from=builder /app/public ./public
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/assets/config.schema.json ./assets/config.schema.json

RUN addgroup -g 1001 -S nodejs
RUN adduser -S nextjs -u 1001
RUN chown -R nextjs:nodejs /app/.next
USER nextjs

ARG GIT_REPO
LABEL org.opencontainers.image.source=${GIT_REPO}

EXPOSE 3000
ENTRYPOINT ["/sbin/tini", "--"]
CMD ["yarn", "run", "start"]