Master Docker Compose environment variables — understand .env file scoping, variable substitution syntax with defaults and errors, env_file vs environment blocks, and when to use Docker secrets over env vars for sensitive data in homelab deployments.
Master Proxmox LXC resource management — configure CPU pinning with cgroups, set memory and swap limits, throttle disk I/O, and apply ZFS quotas to prevent noisy-neighbor contention in your homelab containers.
Plan backup copies around host and site failures, then prove recovery with an isolated restore exercise.
A small file-based baseline with explicit target selection and machine-readable results.
Deploy a production-grade K3s Kubernetes cluster in your homelab on Proxmox VMs — multi-node setup, Longhorn persistent storage, MetalLB load balancing, Traefik ingress, and migrating existing Docker Compose workloads.
Set up GPU acceleration in Docker containers with the NVIDIA Container Toolkit — from installation to real workloads like Ollama AI inference, Jellyfin hardware transcoding, and Frigate object detection.
Run your own internal Certificate Authority with step-ca in Docker, issue TLS certificates via ACME, integrate with Traefik for automatic renewal, and distribute the root CA to all your devices — no more self-signed certificate warnings.
Docker marks unhealthy containers but does not restart them. Build a self-healing homelab with docker-autoheal, systemd watchdog services, custom health scripts, and Uptime Kuma webhooks — no Kubernetes needed.
Correction of an unsupported nginx-poolslip advisory, with steps to verify official NGINX advisories, identify running versions, and validate an update.
Migrate from Plex to Jellyfin on Docker with this complete guide covering library setup, watch history transfer, hardware transcoding with Intel QSV or NVIDIA NVENC, Traefik reverse proxy, and full arrs stack integration for your homelab media server.