# Build Stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy dependency manifests
COPY package*.json ./

# Install exactly the dependency versions recorded in package-lock.json
RUN npm ci

# Copy full application codebase
COPY . .

# Compile frontend and bundle backend files
RUN npm run build

# Production alpine stage
FROM node:20-alpine

WORKDIR /app

# Copy configuration files
COPY package*.json ./

# Install exactly the locked production dependencies
RUN npm ci --omit=dev

# Copy compiled build resources from builder stage
COPY --from=builder /app/dist ./dist

# Expose port (Internal container routing to 3000)
EXPOSE 3000

ENV NODE_ENV=production

# Execute standalone node production entrypoint
CMD ["node", "dist/server.cjs"]