# ---------- Base build stage ----------
FROM node:20-alpine AS builder

# Enable pnpm
RUN corepack enable

WORKDIR /app

# Copy dependency manifests
COPY package.json pnpm-lock.yaml ./

# Install dependencies with frozen lockfile for reproducible builds
RUN pnpm install --frozen-lockfile

# Copy the rest of the app
COPY . .

# Build the Next.js app
RUN pnpm run build

# ---------- Production runtime stage ----------
FROM node:20-alpine AS runner

WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3005

# Copy only necessary files from builder
COPY --from=builder /app/package.json ./
COPY --from=builder /app/pnpm-lock.yaml ./
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/public ./public

# Optional: drop build-time dependencies like devDeps
# (pnpm install --prod is not needed because builder already prunes)

EXPOSE 3005

# Start the production server
CMD ["pnpm", "start"]