FROM node:20-alpine AS base

# Install dependencies only when needed
FROM base AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

# Copy package files
COPY package*.json ./
COPY pnpm-lock.yaml* ./

# Install pnpm and dependencies
RUN corepack enable && corepack prepare pnpm@latest --activate
RUN pnpm install --frozen-lockfile

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

# Build the application
RUN pnpm run build

# Production image
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV PORT=4000

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

# Copy built application
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json

USER nodejs

EXPOSE 4000

ENV HOSTNAME="0.0.0.0"
ENV PORT=4000

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