nexus3

Data

Updated 11 hours ago

Nexus3 Overview

Secure your stack with a hardened Nexus3 image freshly-built by Minimus. Minimus images always include the most up-to-date package version for all packages and dependencies contained in the image.

Nexus3 gives teams a single, self-hosted place to store, proxy, and distribute build artifacts and packages — Maven, npm, Docker images, PyPI, NuGet, Go modules, Helm charts, and more — instead of pulling every dependency straight from public registries. Proxying upstream repositories through one server lets CI/CD pipelines and developers reuse cached packages, publish internal releases, and apply consistent access control from a single source of truth.

Try It Out

Take the Minimus Nexus3 image for a test run:

docker run -d --name my-minimus-nexus3 \
  -p 8081:8081 \
  reg.mini.dev/nexus3

Nexus can take a couple of minutes to finish starting up. Poll the status endpoint until it returns a successful response:

curl -i http://localhost:8081/service/rest/v1/status

Ready to persist your data?

By default, a fresh container starts with no prior state. Mount a volume to /nexus-data to keep your repositories, blobs, and configuration across restarts:

docker run -d --name my-minimus-nexus3 \
  -p 8081:8081 \
  -v nexus3-data:/nexus-data \
  reg.mini.dev/nexus3

Ready to log in?

Retrieve the auto-generated initial admin password from the running container:

docker exec my-minimus-nexus3 cat /nexus-data/admin.password

Visit http://localhost:8081 in your browser and sign in as admin using the password from the previous command. On first login, Nexus walks you through a setup wizard to set a new password and configure anonymous access.

Ready to interact with your repositories?

Once logged in, list the default repositories over the REST API using the password you set in the wizard:

curl -u admin:<your-new-password> http://localhost:8081/service/rest/v1/repositories

Nexus returns the built-in proxy, hosted, and group repositories as JSON:

[
  {
    "name": "maven-central",
    "format": "maven2",
    "type": "proxy",
    "url": "http://localhost:8081/repository/maven-central"
  },
  ...
]

Technical Considerations

The Nexus3 image provided by Minimus is a slim, security-hardened alternative to the public image from Docker Hub. The images are largely interchangeable, with a few differences as noted below.

Nexus3 built by Minimus:

Runs as non-root by default. The public image already runs as non-root under the nexus user (UID 200, GID 200).
Drill down on the version specification tab to see the default user, listening ports, entrypoint, volumes, environment variables, etc.

The Payoff

A hardened, minimal image that will remain more secure for the long run and accrue vulnerabilities at a slower rate.

See the risk reduction dashboard for a detailed CVE comparison over the past 30 days.
Review the compliance report to see the default hardening and security configurations for the image.

Terms & Info

Trademark

This catalog is published by Minimus. All product names, logos, and marks, other than those belonging to Minimus, shown are owned by their respective rights holders and appear here only to identify the open source software each image contains. Minimus claims no ownership of those marks and implies no affiliation with, endorsement by, certification by, or sponsorship by any rights holder.

Disclaimer

Images are provided "as-is" without warranty of any kind. "Hardened" refers to the security configuration applied at the time of build and does not constitute a guarantee of ongoing security or absence of vulnerabilities. The free tier is provided without support, SLA, or guaranteed patching timelines. Security updates may be applied to paid subscriptions before or instead of free tier images. By pulling or using any image you agree to our Terms of Use.