for the backend part we can run the server in two ways.
either download the backend folder and run npm install to download the packages from package.json in the terminal write 'npm run start'
or download the backend folder and install docker on your machine. run 'docker build -t chat-server-image . ' to build the image from docker file. in the terminal run 'docker run -d -p 8000:8000 --name chat-server chat-server-image' this will start theserver in a container.
for the client server download the frontend folder and open the index.html file in the browser.