Configure Docker using the most up to date installation instructions on the Docker website.
In order to start the web app, you will need to run the official Standard Notes Docker image. You can find the image on Docker Hub. The following example will start the app on port 3000 - you can change the port to any other available port on your machine.
docker run -d -p 3000:80 standardnotes/web
The web app should be accessible now on http://localhost:3000
.