# Multi-stage build Dockerfile for Svelte MUD web application

# Build stage
FROM node:20-alpine AS build

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install

# Copy source files
COPY . .

# Build the application
RUN npm run build

# Production stage
FROM node:20-alpine AS production

# Set working directory
WORKDIR /app

# Create a non-root user and group with the node user ID
RUN addgroup -g 1001 -S nodejs && \
    adduser -S -u 1001 -G nodejs nodejs

# Install only production dependencies
COPY package*.json ./
RUN npm install --omit=dev

# Copy built application from the build stage
COPY --from=build /app/build ./build
COPY --from=build /app/docker-production.js ./

# Switch to non-root user
USER nodejs

# Set environment variables
ENV NODE_ENV=production
ENV PORT=3000

# Start the SvelteKit production server
CMD ["node", "docker-production.js"]