# Build stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci --only=production

# Runtime stage
FROM node:20-alpine

# Install wget for health checks
RUN apk --no-cache add wget

WORKDIR /app

# Copy dependencies from builder
COPY --from=builder /app/node_modules ./node_modules

# Copy application files
COPY package*.json ./
COPY index.js index-standalone.js ./
COPY public ./public
COPY src ./src

# Create non-root user (let Alpine assign available GID/UID)
RUN addgroup spore && \
    adduser -D -s /bin/sh -G spore spore && \
    chown -R spore:spore /app

USER spore

# Expose port
EXPOSE 3000

# Run the application
CMD ["node", "index.js"]