use dockerfile in render.com return 502 , so I change dockerfile to fix it, I hope it can help others.

[luojiyin1987]

Verify canary release

• I verified that the issue exists in the latest Next.js canary release

Provide environment information

render.com  docker

Which example does this report relate to?

With Docker

What browser are you using? (if relevant)

No response

How are you deploying your application? (if relevant)

render.com

Describe the Bug

web browser return 502, but in render.com dashboard have no error log

Expected Behavior

show my web site . in my VM is OK, but in render.com is not work.

To Reproduce

the docker fille will get error

# Install dependencies only when needed
FROM node:lts-alpine AS deps
# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
RUN apk add --no-cache libc6-compat curl
WORKDIR /app

# Install dependencies based on the preferred package manager
COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* .npmrc ./
RUN \
  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
  elif [ -f package-lock.json ]; then npm ci; \
  elif [ -f pnpm-lock.yaml ]; then yarn global add pnpm && pnpm i; \
  else echo "Lockfile not found." && exit 1; \
  fi


# Rebuild the source code only when needed
FROM node:lts-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Next.js collects completely anonymous telemetry data about general usage.
# Learn more here: https://nextjs.org/telemetry
# Uncomment the following line in case you want to disable telemetry during the build.
# ENV NEXT_TELEMETRY_DISABLED 1

RUN CI=true  yarn build

# If using npm comment out above and use below instead
# RUN npm run build

# Production image, copy all the files and run next
FROM node:lts-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
# Uncomment the following line in case you want to disable telemetry during runtime.
# ENV NEXT_TELEMETRY_DISABLED 1

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

COPY --from=builder /app/public ./public

# 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

EXPOSE 3000

ENV PORT=3000

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

I change dockerfile to fix

FROM node:20-slim AS base
RUN apt-get update && \
    apt-get install ca-certificates curl libjemalloc-dev -y --no-install-recommends  && \
    rm -rf /var/lib/apt/lists/*
# set environment variable to preload JEMalloc
ENV LD_PRELOAD="/usr/lib/x86_64-linux-gnu/libjemalloc.so.2"
# set GC time, set arenas number, set background_thread run GC
ENV MALLOC_CONF=dirty_decay_ms:1000,narenas:2,background_thread:true
ENV PNPM_HOME="/pnpm"
ENV PATH="$PNPM_HOME:$PATH"
RUN corepack enable
COPY . /app
WORKDIR /app

FROM base AS build
RUN --mount=type=cache,id=pnpm,target=/pnpm/store  pnpm i --frozen-lockfile
RUN CI=true  pnpm build

FROM base
COPY --from=build /app/.next/standalone ./
COPY --from=build /app/public ./public
COPY --from=build /app/.next/static ./.next/static
EXPOSE 3000
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"
CMD ["node", "server.js"]