sigma

Sigma is an image registry that is extremely easy to deploy and maintain, and it adheres to the interface standards defined by the OCI Distribution Specification 1.1, it can also support any other client programs that follow the interface definition of the OCI Distribution Specification, such as oras, apptainer, helm, and nerdctl.

Quick Start

Now you can use this command to run a simple server:

docker run --name sigma -p 3000:3000 --rm tosone/sigma:nightly-alpine

The default username and password is: sigma/Admin@123, if you want to modify the default password, please refer to the instructions provided here.

Demo Server

It is deployed on an AWS EC2 instance (2C4G, 40G disk) running Debian 12.1 as the Linux distribution. The Docker version used is 25.0.3. The demo server was set up following these instructions.

Visit: https://sigma.tosone.cn, username/password: sigma/Admin@123

Architecture

Features

• Support docker registry v2 protocol.
• Support OCI Image v1 Format and OCI Image Index v1 Format.
• Support OCI artifacts such as helm and so on.
• Support OCI sbom.
• Support Image security scan.
• Support registry proxy.
• Support Namespace quota.
• Support Image automatic garbage collection.
• Support Image sign.
• Support Image build in docker, podman and kubernetes.
• Support Image replication.

Release Schedule

• There will be a major release in the middle and end of each year.
• A minor release is released at the beginning of each month.
• There will probably be a bugfix release in the middle of each week.

Alternatives

• Distribution
• Harbor
• zot