{
  "name": "client",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "dev": "next dev",
    "build": "next build",
    "start": "next start",
    "lint": "next lint",
    "pkg": "pkg . --out-path dist --targets node18-win-x64"
  },
  "bin": "server.js",
  "pkg": {
    "scripts": [
      ".next/**/*.js",
      "node_modules/**/*",
      "node_modules/sharp/**/*"
    ],
    "assets": [
      ".next/**/*",
      "node_modules/**/*",
      "public/**/*",
      "node_modules/sharp/**/*",
      ".env"
    ],
    "targets": [
      "node18-win-x64"
    ]
  },
  "dependencies": {
    "@headlessui/react": "^2.1.2",
    "@heroicons/react": "^2.1.5",
    "axios": "^1.7.3",
    "cors": "^2.8.5",
    "next": "14.2.5",
    "next-auth": "^4.24.7",
    "pkg": "^5.8.1",
    "radix-ui": "^1.0.1",
    "react": "^18",
    "react-dom": "^18",
    "sharp": "^0.33.5"
  },
  "devDependencies": {
    "@types/node": "^20",
    "@types/react": "^18",
    "@types/react-dom": "^18",
    "esbuild": "0.23.1",
    "eslint": "^8",
    "eslint-config-next": "14.2.5",
    "postcss": "^8",
    "tailwindcss": "^3.4.1",
    "typescript": "^5"
  }
}

My app works fine when I start it with

node server.js

but when I build it i get the missing Sharp error.

// next.config.mjs
/** @type {import('next').NextConfig} */
const nextConfig = {
    reactStrictMode: true,
    env: {
        API_URL: process.env.API_URL,
    },
    output: "standalone",
};

export default nextConfig;

Docker image:

FROM node:18-alpine AS base

FROM base AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* ./
RUN \
  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
  elif [ -f package-lock.json ]; then npm ci; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
  else echo "Lockfile not found." && exit 1; \
  fi


FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .



RUN \
  if [ -f yarn.lock ]; then yarn run build; \
  elif [ -f package-lock.json ]; then npm run build; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
  else echo "Lockfile not found." && exit 1; \
  fi



FROM base AS executable
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
RUN chown -R nextjs:nodejs /app


COPY --from=builder /app/public ./public
RUN mkdir .next
RUN chown nextjs:nodejs .next

COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static


RUN npm install -g pkg

USER nextjs

# IDK why but this is needed in order to work with pkg
RUN sed -i 's/process.chdir(__dirname)//g' server.js

RUN npm run pkg

FROM alpine:latest as final
WORKDIR /output

COPY --from=executable /app/dist/client.exe /output/client.exe

ENTRYPOINT ["/output/client.exe"]