Tosone 0f31d58990 chore(scripts): quote the rs3 healthcheck so shellcheck stops warning
The healthcheck was written in single quotes, which shellcheck flags as
"expressions don't expand in single quotes" even though deferring the
expansion to the container is exactly what is wanted. Keep the same value
with escaped double quotes: the backslash stops the host shell from touching
${RS3_PORT}, and the container expands it at run time.

Verification:
- bash -n scripts/run_rs3.sh
- docker run with the rendered --health-cmd resolves RS3_PORT inside the container
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sigma

sigma

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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 configuration instructions.

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

The diagram below maps Sigma's main runtime layers, from client entry points to request handling, background workers, and the infrastructure services they depend on.

Sigma 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.

AI Clients and Automation

Sigma provides two integration paths for AI clients and external automation:

  • sigma-cli: a single binary that operates a remote Sigma server over the REST API. It covers namespaces, repositories, tags, artifacts, members, and users. See CLI & AI Agents.
  • External REST API skill: tools/skill/sigma-api-operator packages a reusable skill and swagger.yaml so CLI agents such as Claude Code or Copilot CLI can discover Sigma APIs and operate resources through HTTP requests, including the areas the CLI does not wrap yet.

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