This is a Cloud Native Buildpack that create a terminal session in a browser for your container.
You can build this using pack.
$ echo '{"engines":{"node":"14.x"}}' > package.json
$ touch requirements.txt
$ pack build --buildpack jkutner/web-tty myapp
You can add other buildpacks using the --buildpack option (or -b for short) multiple times.
Then run your app
docker run -it -p 3000:3000 myapp
Open a browser to localhost:3000 and you'll see something like:
By default, the buildpack starts the terminal in a bash session. But you can override this with the WEB_TTY_CMD env var at build-time. For example, the following command will start the session in a Python REPL:
$ pack build -b jkutner/web-tty -e WEB_TTY_CMD=python myapp
If the terminal session is not your primary web process, you can override the port it uses by setting WEB_TTY_PORT at run-time. By defaul it will use PORT or 3000. Then have you primary web process run the wetty.sh script in the background, and your primary HTTP server and proxy to your WEB_TTY_PORT port.
This buildpack installs wetty into your image.