Dockerfile

# Use official Node.js image
FROM node:20-alpine AS base
WORKDIR /app

# Install dependencies only when needed
FROM base AS deps
COPY package.json package-lock.json* ./
RUN npm install

# Development environment
FROM base AS dev
COPY --from=deps /app/node_modules ./node_modules
COPY . .
EXPOSE 3000
CMD ["npm", "run", "dev"]

# Production build
FROM base AS build
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# Production environment
FROM base AS prod
WORKDIR /app
COPY --from=build /app/package.json ./package.json
COPY --from=build /app/.next/standalone ./
COPY --from=build /app/.next/static ./.next/static
COPY --from=build /app/public ./public
EXPOSE 3000
CMD ["node", "server.js"]