# Multi-stage build for Astro SSR application
FROM node:lts AS base
WORKDIR /app

# Install dependencies
FROM base AS deps
COPY package*.json ./
RUN npm ci --only=production

# Build stage
FROM base AS build
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# Production stage
FROM node:lts-alpine AS production
WORKDIR /app

# Copy necessary files
COPY --from=deps /app/node_modules ./node_modules
COPY --from=build /app/dist ./dist
COPY --from=build /app/server.js ./server.js
COPY --from=build /app/package.json ./package.json
COPY --from=build /app/.env ./.env

# Set environment
ENV NODE_ENV=production
ENV PORT=3000

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=40s \
  CMD node -e "require('http').get('http://localhost:3000/', (r) => {if (r.statusCode !== 200) throw new Error(r.statusCode)})"

# Start server
CMD ["node", "server.js"]