# Stage 1: build frontend
FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# Stage 2: runtime
FROM node:20-alpine
WORKDIR /app
ENV NODE_ENV=production PORT=3000

COPY package*.json ./
RUN npm ci --omit=dev

COPY server.js ./
COPY src/gameState.js src/websocket-handler.js src/server-utils.js src/persist.js ./src/
COPY --from=builder /app/dist ./dist

EXPOSE 3000
CMD ["node", "server.js"]