miekg/gitopper: Gitops for non-Kubernetes folks

Gitopper is a tool designed for non-Kubernetes environments to implement GitOps by monitoring a git repository, pulling changes, and reloading server processes. It supports sparse checkouts, SSH key authentication, and features such as metrics, diff detection, out-of-band rollbacks, and canary deployments. Gitopper does not handle package upgrades or downgrades, focusing instead on configuration and service management through git.