# Use an official Node.js runtime as a parent image
FROM node:18-alpine

# Set the working directory in the container to /app
WORKDIR /app

# Copy package.json and package-lock.json (if available) to the working directory
# This is done separately to leverage Docker's layer caching
COPY package*.json ./

# Install any dependencies
RUN npm install

# Copy the rest of the application code to the working directory
COPY . .

# Make port 8080 available to the world outside this container
EXPOSE 8080

# Run app.js when the container launches
CMD [ "node", "app.js" ]