# Use Node 16 alpine as parent image FROM node:16-alpine # Change the working directory on the Docker image to /app WORKDIR /app # Copy package.json and package-lock.json to the /app directory COPY package.json package-lock.json ./ # Install dependencies RUN npm install # Copy the rest of project files into this image COPY . . # Expose application port EXPOSE 3000 # Start the application CMD npm start