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Version: v0.19.0

Registry Authentication

To analyze private images, regis-cli needs to authenticate with your container registry. It typically leverages the authentication mechanisms of its underlying Analyzers, such as Skopeo and Trivy.

Using Docker Credentials​

The easiest way to authenticate is to run docker login before running an analysis. Most analyzers will automatically pick up the credentials from ~/.docker/config.json.

docker login my-registry.com
regis analyze my-registry.com/private-repo:latest

Provider-Specific Authentication​

GitHub Packages (GHCR)​

Pass your GITHUB_TOKEN or a PAT via standard Docker login.

Amazon ECR​

Ensure your environment is configured with AWS credentials. You can use the AWS CLI helper:

aws ecr get-login-password --region region | docker login --username AWS --password-stdin 1234567890.dkr.ecr.region.amazonaws.com

Google Artifact Registry (GAR)​

Use the gcloud helper:

gcloud auth configure-docker region-docker.pkg.dev

Troubleshooting​

If you encounter 401 Unauthorized or 403 Forbidden errors:

  1. Verify Credentials: Ensure the credentials used by docker login have pull permissions.
  2. Analyzer-Specific Flags: Some analyzers might require explicit credential flags.
  3. Network/Proxy: Check if your environment requires a proxy to reach the registry.

[!IMPORTANT] Never hardcode credentials in your Playbooks or configuration files. Always use environment variables or CI/CD secrets.