Common App Frameworks

Domino can run apps built in a variety of popular frameworks, as long as they launch a web server on localhost:8888. Below are minimal examples that demonstrate how to start each supported type of app. These are intended to help you get a working stub up and running quickly.

Dash (Python)

Dash is a lightweight Python framework for building interactive analytic apps with Plotly visualizations.

import dash

app = dash.Dash(__name__, routes_pathname_prefix='/')
if __name__ == '__main__':
    app.run_server(port=8888, host='0.0.0.0', debug=True)

  • Make sure dash is installed in your environment.

  • Use routes_pathname_prefix='/' for proper routing inside Domino.

Streamlit (Python)

Streamlit is a rapid app framework for turning Python scripts into shareable web apps with minimal code.

import streamlit as st

st.title("Minimal Streamlit App")
st.write("Hello from Domino!")

In your .sh file, launch with:

streamlit run app.py --server.port=8888 --server.address=0.0.0.0

  • Streamlit apps require a separate .sh such as app.sh startup script.

  • You can configure the route prefix using DOMINO_RUN_HOST_PATH.

Flask (Python)

Flask is a lightweight Python web framework that is ideal for creating custom endpoints or fully bespoke applications.

from flask import Flask
import os

app = Flask(__name__)

@app.route("/")
def index():
    return "Hello from Flask in Domino!"

if __name__ == '__main__':
    app.run(port=8888, host='0.0.0.0')

  • Works out of the box with Domino’s routing and identity headers.

Shiny ®

Shiny is R’s standard framework for building interactive web applications with reactive components.

Option 1: Inline R script

shiny::runApp("./", port = 8888, host = "0.0.0.0")

Option 2: Shell script to launch Shiny

In your .sh file:

R -e 'shiny::runApp("./", port=8888, host="0.0.0.0")'

  • Shiny must run on localhost:8888 to work in Domino.

  • User-level identity headers are only supported by Shiny Server Pro.

These minimal examples are designed to help you quickly stand up a working app in Domino using your preferred framework. Each framework has specific requirements for launch behavior and routing, but all follow the same basic pattern.

Next Steps