Either you can just open the ./index.html itself, or run npm run devStart to start a local webserver on port 5173.
No additional installation required
Step 1: Install the dependencies by running npm install in the ./server directory
Step 2: Now, create a new file called .env in the ./server directory and add the values in form of the env-template.txt file
Step 3: If you want to use SSL / HTTPS, go into the ./server/ssl directory and run the generate.cmd file after you changed the C, ST, L, O, OU, CN, emailAddress and alt_names fields in the generate.cnf file. This will generate a self-signed certificate and key for you. If you don't want to use SSL / HTTPS, just delete the ./server/ssl directory.
Step 4: Run npm run nodemon to start the server.