Dockerfile

# Use Node.js 18 Alpine image for smaller size
FROM node:18-alpine AS base

# Set working directory
WORKDIR /app

# Install necessary packages for building native dependencies
RUN apk add --no-cache \
    python3 \
    make \
    g++ \
    libc6-compat

# Copy package files
COPY package.json ./
COPY package-lock.json* ./

# Install dependencies
RUN npm install --only=production && npm cache clean --force

# Development stage
FROM base AS dev
RUN npm install
COPY . .
EXPOSE 3000
CMD ["npm", "run", "dev"]

# Build stage
FROM base AS build
RUN npm install
COPY . .
RUN npm run build

# Production stage
FROM node:18-alpine AS production

# Create app user for security
RUN addgroup -g 1001 -S nodejs
RUN adduser -S nodejs -u 1001

# Set working directory
WORKDIR /app

# Install dumb-init for proper signal handling
RUN apk add --no-cache dumb-init

# Copy built application
COPY --from=build --chown=nodejs:nodejs /app/dist ./dist
COPY --from=build --chown=nodejs:nodejs /app/node_modules ./node_modules
COPY --from=build --chown=nodejs:nodejs /app/package.json ./package.json

# Create directories for uploads and wallet
RUN mkdir -p uploads wallet && chown nodejs:nodejs uploads wallet

# Switch to non-root user
USER nodejs

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD node -e "require('http').get('http://localhost:3000/health', (res) => { \
        process.exit(res.statusCode === 200 ? 0 : 1) \
    }).on('error', () => process.exit(1))"

# Start the application with dumb-init
ENTRYPOINT ["dumb-init", "--"]
CMD ["node", "dist/server.js"]