Runs a simple "hello world" web server for container testing.

Uses the web server provided by the ncat utility. For example, to listen on port 8080:

# balena run --rm -d -p 8080:80 kb2ma/ncat-web-server

Then you can fetch the page from the device at the URL http://<device-ip>:8080/index.html.

See the section Turn Netcat into a simple web server on the Neat Tricks page for more details.