Chainguard Container for rails-fips

Ruby on Rails (often just called "Rails") is a web-application framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern.

Chainguard Containers are regularly-updated, secure-by-default container images.

Download this Container Image

For those with access, this container image is available on cgr.dev:

docker pull cgr.dev/ORGANIZATION/rails-fips:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Compatibility Notes

This image is comparable to the Ruby image available from Docker Hub with the rails gems installed. Switching to the Chainguard image should not require any changes to your existing setup.

FIPS Support

The ruby-on-rails-fips Chainguard Image ships with a validated redistribution of the OpenSSL's FIPS provider module. For more on FIPS support in Chainguard Images, consult the guide on FIPS-enabled Chainguard Images on Chainguard Academy.

Getting Started

Docker

You can run the following command to test Chainguard's Rails-FIPS image:

docker run --rm cgr.dev/ORGANIZATION/rails-fips:latest rails --version

The following is a minimal example of a Dockerfile that uses a single-stage build to run a Rails application:

FROM cgr.dev/ORGANIZATION/rails-fips:latest

WORKDIR /rails

# This assumes your Dockerfile is in the root directory of your Rails project
COPY . .

RUN bundle install

CMD [ "rails", "server", "-b", "0.0.0.0" ]

This image can be built with:

docker build -t my-new-tag .

You can then run the Rails app with the following command:

$ docker run --rm my-new-tag
=> Booting Puma
=> Rails 8.0.1 application starting in development 
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 6.5.0 ("Sky's Version")
* Ruby version: ruby 3.4.1 (2024-12-25 revision 48d4efcb85) +YJIT +PRISM [aarch64-linux-gnu]
*  Min threads: 3
*  Max threads: 3
*  Environment: development
*          PID: 1
* Listening on http://0.0.0.0:3000
Use Ctrl-C to stop

Documentation and Resources

• Official Ruby on Rails Documentation.

What are Chainguard Containers?

Chainguard Containers are minimal container images that are secure by default.

In many cases, the Chainguard Containers tagged as :latest contain only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager. Chainguard Containers are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a more secure software supply chain.

The main features of Chainguard Containers include:

• Minimal design, without unnecessary software bloat
• Daily builds to ensure container images are up-to-date with available security patches
• High quality build-time SBOMs attesting to the provenance of all artifacts within the image
• Verifiable signatures provided by Sigstore
• Reproducible builds with Cosign and apko (read more about reproducibility)

For cases where you need container images with shells and package managers to build or debug, most Chainguard Containers come paired with a -dev variant.

Although the -dev container image variants have similar security features as their more minimal versions, they feature additional software that is typically not necessary in production environments. We recommend using multi-stage builds to leverage the -dev variants, copying application artifacts into a final minimal container that offers a reduced attack surface that won’t allow package installations or logins.

Learn More

To better understand how to work with Chainguard Containers, please visit Chainguard Academy and Chainguard Courses.

In addition to Containers, Chainguard offers VMs and Libraries. Contact Chainguard to access additional products.

Trademarks

This software listing is packaged by Chainguard. The trademarks set forth in this offering are owned by their respective companies, and use of them does not imply any affiliation, sponsorship, or endorsement by such companies.