# Multi-stage build Dockerfile for Svelte MUD client

# Build stage
FROM node:20-alpine AS build

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci

# 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 ci --omit=dev

# Copy built application from the build stage
COPY --from=build /app/build ./build
COPY --from=build /app/src/websocket-server.js ./src/
COPY --from=build /app/unified-server.js ./

# Switch to non-root user
USER nodejs

# Expose ports for both web and websocket servers
EXPOSE 3000
EXPOSE 3001

# Set environment variables
ENV NODE_ENV=production

# Start the unified server (web + websocket on the same port)
CMD ["node", "unified-server.js"]