# Use lightweight Node.js 18 alpine image
FROM node:18-alpine

# Set working directory
WORKDIR /app

# Copy package files first to leverage Docker cache for dependencies
COPY package*.json ./

# Install dependencies (only production if possible, but standard npm install is fine here)
RUN npm install

# Copy the rest of the application code
COPY . .

# Expose the application port
EXPOSE 3000

# Start the application
CMD ["npm", "start"]