scala-sbt

packaged by Chainguard

Chainguard Container for scala-sbt

A minimal, secure, and production-ready Scala and SBT base image

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/scala-sbt:latest

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

Using scala-sbt as a Base Image

This image is designed to be used as a base image for Scala applications. Here's a simple example of how to use it:

FROM cgr.dev/chainguard/scala-sbt:latest

WORKDIR /app

# Copy your Scala application
COPY . .

# Build your application with SBT
RUN sbt compile

# Run your application
CMD ["sbt", "run"]

Environment Variables

The following environment variables are set in the image:

• SCALA_VERSION: The version of Scala included in the image
• SBT_VERSION: The version of SBT included in the image
• JAVA_HOME: Path to the Java installation
• JAVA_OPTS: Default Java options set to -XX:+UseG1GC
• USER_ID and GROUP_ID: Set to 1001 for the non-root user

User and Working Directory

By default, the image runs as root with the working directory set to /root. For improved security, consider switching to the non-root user (UID 1001) in your Dockerfile:

USER 1001
WORKDIR /home/sbtuser

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.