LIGHTCLOUD

Framework · Ruby

Deploy Sinatra on Light Cloud

Sinatra is a small Ruby library for web apps and APIs. Light Cloud detects it from sinatra in the Gemfile. It runs as a container that scales with traffic and down to zero when idle.

Free plan, no card. Google or GitHub sign-in.

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Deploy Sinatra

Sinatra at a glance

Detected from
sinatra in the Gemfile
Runs as
Container that scales with traffic and to zero when idle
Ruby
Ruby 3.2
Start command
bundle exec rackup when there is a config.ru, otherwise ruby app.rb
Port
3000

How to deploy Sinatra

  1. 01

    Bring the code

    Pick a repository, upload a folder, or ask Claude Code or GitHub Copilot to put it online.

    github.com/acme/app

  2. 02

    Sinatra, detected

    The files are read and the build is filled in. Every setting can be changed by hand.

  3. 03

    Built into a container

    An image is built and started, listening on the port the app expects.

  4. 04

    Live

    A light-cloud.io URL in minutes, a preview URL for every branch, and logs and metrics beside it.

    main-app-acme.light-cloud.io

More on Ruby

Sinatra builds on Ruby. These do too.

Add a database

Managed PostgreSQL in the same project, its connection string one copy away.

Questions

How do I deploy Sinatra?
Connect the repository, upload the folder, or ask Claude Code or GitHub Copilot to deploy it. Light Cloud reads the files, builds Sinatra and returns a live URL in minutes, with a preview URL for every branch.
How much does it cost to host Sinatra?
The Free plan runs up to 3 server apps with $1 of usage a month and no card. A container is billed by the hour only while it runs, so an idle app costs nothing and a quiet one uses about $0.10 a month. Paid plans start at $5 a month with $5 of usage included.
Can a Sinatra app use a database?
Yes. Create a PostgreSQL database in the same project and set its connection string as DATABASE_URL. Databases come with paid plans, from $5 a month.
Can I use my own Dockerfile instead?
Yes. A Dockerfile at the root of the repository always wins over detection: it is built as is and runs as a container.

Sinatra, live in minutes

Connect a Sinatra repository and get a live URL. Start free, no card.

Deploy SinatraRead the Sinatra docs