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dotnet-sdk-fips

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Chainguard Image for dotnet-fips

Chainguard Images are regularly-updated, minimal container images with low-to-zero CVEs.

Download this Image

This image is available on cgr.dev:

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

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

FIPS Enablement

Our .NET runtime and sdk images have FIPS enabled versions. However, the underlying .NET core runtime does not include any mechanisms to enforce FIPS compliance according to Microsoft's official documentation. Accordingly, it is up you and/or your developers to ensure that your application is using FIPS compliant algorithms and that the runtime environment is also properly configured to run in FIPS mode.

Usage

The dotnet-sdk-fips image can be used directly for simple cases, or with a multi-stage build using the dotnet-sdk-fips as the builder and dotnet-runtime-fips as the final target container.

To get started, go to your current dotnet application directory (or where you house your dotnet applications) and execute the following command. This command should be able to detect the dotnet project in your directory and create a base for the docker initialization.

docker init

This command should create the following files.

Dockerfile
compose.yaml
README.Docker.md
.dockerignore

After the files have been created, replace the contents within the created Dockerfile with the following

FROM cgr.dev/chainguard/dotnet-sdk-fips:latest AS build

COPY --chown=nonroot:nonroot . /source

# If your project resides in a sub directory, make sure you are pointing to that directory. ex: If your project resided in a directory called 'app', you would set the destination to /source/app
WORKDIR /source

RUN dotnet publish --use-current-runtime --self-contained false -o Release

# If you are running an ASPNET project, you can instead pull our ASPNET image cgr.dev/chainguard/aspnet-runtime-fips:latest
FROM cgr.dev/chainguard/dotnet-runtime-fips:latest AS final
WORKDIR /

# Copy everything needed to run the app from the "build" stage.
COPY --from=build source .

ENTRYPOINT ["dotnet", "Release/dotnet.dll"]

This will build your application using the SDK image and then copy the built application over to the Runtime image which will then start.

You can run and publish a local image with the following command

docker compose up -d --build

You can also remove the container using the following

docker compose down

Contact Support

If you have a Zendesk account (typically set up for you by your Customer Success Manager) you can reach out to Chainguard's Customer Success team through our Zendesk portal.

What are Chainguard Images?

Chainguard Images are a collection of container images designed for security and minimalism.

Many Chainguard Images are distroless; they contain only an open-source application and its runtime dependencies. These images do not even contain a shell or package manager. Chainguard Images are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a secure software supply chain.

The main features of Chainguard Images include:

-dev Variants

As mentioned previously, Chainguard’s distroless Images have no shell or package manager by default. This is great for security, but sometimes you need these things, especially in builder images. For those cases, most (but not all) Chainguard Images come paired with a -dev variant which does include a shell and package manager.

Although the -dev image variants have similar security features as their distroless versions, such as complete SBOMs and signatures, they feature additional software that is typically not necessary in production environments. The general recommendation is to use the -dev variants only to build the application and then copy all application artifacts into a distroless image, which will result in a final container image that has a minimal attack surface and won’t allow package installations or logins.

That being said, it’s worth noting that -dev variants of Chainguard Images are completely fine to run in production environments. After all, the -dev variants are still more secure than many popular container images based on fully-featured operating systems such as Debian and Ubuntu since they carry less software, follow a more frequent patch cadence, and offer attestations for what they include.

Learn More

To better understand how to work with Chainguard Images, we encourage you to visit Chainguard Academy, our documentation and education platform.

Licenses

Chainguard Images contain software packages that are direct or transitive dependencies. The following licenses were found in the "latest" version of this image:

  • Apache-2.0

  • GCC-exception-3.1

  • GPL-2.0-only

  • GPL-2.0-or-later

  • GPL-3.0-or-later

  • LGPL-2.1-or-later

  • MIT

For a complete list of licenses, please refer to this Image's SBOM.

Software license agreement

Compliance

This is a FIPS validated image for FedRAMP compliance.

This image is STIG hardened and scanned against the DISA General Purpose Operating System SRG with reports available.

Learn more about STIGsGet started with STIGs

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