FROM node:latest # Set working directory inside the container WORKDIR /usr/src/app COPY callback-server/package*.json ./callback-server/ RUN npm install ./callback-server COPY callback-server ./callback-server/ RUN env > .env # Expose the port the app runs on EXPOSE 80 # Command to run the application CMD ["node", "--env-file=.env" , "callback-server/app.js"]