Johannes Krumm

You can upgrade manually-managed Docker containers with dependency and breaking-change analysis, run full 8-phase homelab server health audits with issue remediation, manage Cloudflare DNS records and tunnel ingress rules via SSH, and audit documentation files against infrastructure code for accuracy.

These skills target homelab operators and self-hosting administrators who run VPS servers with manually-managed Docker containers. They suit engineers maintaining personal infrastructure who need container upgrade safety checks, system health auditing, DNS management, and documentation kept in sync with real infrastructure changes.

The upgrade-stack skill acts as an upgrade assistant for all manually-managed Docker containers. It performs dependency checking, maintains awareness of shared infrastructure between containers, and analyzes breaking changes before applying upgrades, reducing the risk of disrupting interconnected homelab services.

The audit skill runs a full health audit across 8 phases, examining VPS system resources, running containers, network connectivity, and backup status. After completing the audit, it offers to fix each issue found rather than only reporting problems.

The docs skill audits documentation files against actual infrastructure code for accuracy and completeness. It detects infrastructure changes and updates README.md, AGENTS.md, the docs/ directory, and skill files so documentation never drifts from the real server state.