ntfy Self-Hosted Push Notification Server for Homelab Alerts

Deploy ntfy.sh on Docker for push notifications across your entire homelab. From Uptime Kuma to Prometheus Alertmanager, get real-time mobile alerts for everything with a single HTTP POST.

June 15, 2026 · 9 min · 1736 words · GnTech

Docker Supply Chain Security — SBOM, Image Signing, and Verification

Practical guide to securing your container supply chain in the homelab: generate SBOMs with Syft, sign images with Cosign, scan for vulnerabilities with Grype, and enforce Docker Content Trust.

June 13, 2026 · 6 min · 1261 words · GnTech

Docker Compose YAML Anchors & Extensions — DRY Multi-Service Deployments

Stop copying config between services. Use YAML anchors, x-blocks, and fragment merging to write clean, DRY docker-compose files for your homelab. Practical patterns with real examples.

June 12, 2026 · 8 min · 1508 words · GnTech

Docker Container Graceful Shutdown — Signals, Stop Grace Period, and Trap Handlers

Configure proper graceful shutdown for Docker containers in your homelab. Covers stop signals, stop_grace_period, init process management with tini/dumb-init, and SIGTERM trap handlers to prevent data corruption during restarts.

June 12, 2026 · 12 min · 2348 words · GnTech

Docker Storage Quotas — Check the Backend and the Data Path First

Distinguish classic overlay2 writable-layer limits from application volume quotas and plan XFS changes without deleting Docker data.

June 11, 2026 · 3 min · 605 words · GnTech

acme.sh Let's Encrypt Certificates for Homelab Docker Services

Automate Let’s Encrypt SSL/TLS certificates in your homelab using acme.sh and Docker. Includes DNS-01 wildcard certs, auto-renewal, and integration with Traefik, Nginx Proxy Manager, and Caddy.

June 11, 2026 · 8 min · 1678 words · GnTech

Linux auditd Security Auditing — Monitor Proxmox and Docker Activity

Configure Linux auditd to watch container starts, file changes, and Proxmox host activity. Includes auditctl rules, ausearch queries, and Docker integration for comprehensive homelab security auditing.

June 11, 2026 · 9 min · 1881 words · GnTech

Docker Proxy Configuration Guide — HTTP/HTTPS Proxy for Containers

Configure HTTP/HTTPS proxy for Docker daemon, CLI, and individual containers in your homelab. Covers systemd drop-in overrides, daemon.json settings, Docker Compose proxy variables, and the critical NO_PROXY configuration to avoid breaking internal container communication.

June 11, 2026 · 8 min · 1554 words · GnTech

Docker Compose Startup Dependencies and Init Container Patterns

A practical guide to Docker Compose startup ordering — covering depends_on conditions, healthcheck-based readiness, init container patterns with wait-for-it, and real-world compose examples for multi-service homelab stacks.

June 10, 2026 · 7 min · 1463 words · GnTech

Linux Network Performance Tuning — ethtool, irqbalance, and tc for Homelab

Optimize Linux network performance on Proxmox and Docker hosts with ethtool ring buffer tuning, irqbalance configuration, multiqueue RSS/RPS, and tc traffic shaping — with real benchmarks and systemd persistence.

June 9, 2026 · 13 min · 2763 words · GnTech