fix render.com return 502 (#223)

Dockerfile

@@ -1,57 +1,26 @@
-# 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
+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
 
-# 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
+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
-
-CMD ["node", "server.js"]
+ENV HOSTNAME="0.0.0.0"
+CMD ["node", "server.js"]