https://blog.gntech.me/tags/containers/ Recent content in Containers on GnTech Blog Hugo en-us Wed, 17 Jun 2026 13:30:00 -0400 https://blog.gntech.me/posts/2026-06-17-cgroups-v2-docker-container-resource-limits/ Wed, 17 Jun 2026 13:30:00 -0400 https://blog.gntech.me/posts/2026-06-17-cgroups-v2-docker-container-resource-limits/ Deep dive into Linux cgroups v2 for Docker container resource control — memory.max/high, CPU quotas, I/O weights, PSI monitoring, and docker-compose deploy.resources configurations for homelab. https://blog.gntech.me/posts/2026-06-16-container-runtimes-runc-vs-crun-docker/ Tue, 16 Jun 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-06-16-container-runtimes-runc-vs-crun-docker/ Compare runc and crun container runtimes for Docker in your homelab. Benchmark startup times, memory usage, and io_uring support. Switch runtimes in minutes with a simple daemon.json change. https://blog.gntech.me/posts/2026-06-15-mikrotik-routeros-container-apps-deployment/ Mon, 15 Jun 2026 16:00:00 -0400 https://blog.gntech.me/posts/2026-06-15-mikrotik-routeros-container-apps-deployment/ Deploy Gitea, Home Assistant, and other services on MikroTik RouterOS with the new App catalog. One-click container setup with automatic firewall, NAT, and networking. https://blog.gntech.me/posts/2026-06-15-samba-file-server-proxmox-lxc-zfs/ Mon, 15 Jun 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-06-15-samba-file-server-proxmox-lxc-zfs/ Build a lightweight, high-performance Samba NAS inside a Proxmox LXC with direct ZFS dataset passthrough. Covers privileged LXC setup, UID mapping, performance tuning, and backup integration. https://blog.gntech.me/posts/2026-06-13-podman-rootless-containers-docker-alternative-homelab/ Sat, 13 Jun 2026 14:00:00 -0400 https://blog.gntech.me/posts/2026-06-13-podman-rootless-containers-docker-alternative-homelab/ Migrate from Docker to rootless Podman for safer homelab deployments. Installation, podman-compose, Quadlets, rootless networking, and Docker migration strategies. https://blog.gntech.me/posts/2026-06-12-docker-container-graceful-shutdown-signals/ Fri, 12 Jun 2026 10:30:00 -0400 https://blog.gntech.me/posts/2026-06-12-docker-container-graceful-shutdown-signals/ 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. https://blog.gntech.me/posts/2026-06-11-docker-proxy-configuration-homelab/ Thu, 11 Jun 2026 11:00:00 -0400 https://blog.gntech.me/posts/2026-06-11-docker-proxy-configuration-homelab/ Configure HTTP/HTTPS proxy for Docker daemon, CLI, and individual containers in your homelab. Covers daemon.json, systemd override, Compose env vars, and NO_PROXY best practices. https://blog.gntech.me/posts/2026-06-10-docker-compose-startup-dependencies-init-containers/ Wed, 10 Jun 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-06-10-docker-compose-startup-dependencies-init-containers/ Master Docker Compose startup ordering with depends_on, healthcheck conditions, and init container patterns for reliable multi-service homelab stacks. https://blog.gntech.me/posts/2026-06-06-linux-oom-management-docker-homelab/ Sat, 06 Jun 2026 16:00:00 -0400 https://blog.gntech.me/posts/2026-06-06-linux-oom-management-docker-homelab/ Prevent OOM killer crashes on Docker homelab hosts. Configure systemd OOMD, cgroups v2 memory limits, oom_score_adj, swap, and earlyoom for reliable container stability. https://blog.gntech.me/posts/2026-06-06-docker-buildx-multi-architecture-images-homelab/ Sat, 06 Jun 2026 16:00:00 -0400 https://blog.gntech.me/posts/2026-06-06-docker-buildx-multi-architecture-images-homelab/ Build and serve multi-architecture Docker images with Docker Buildx in your homelab. Step-by-step guide for amd64 and arm64 cross-platform builds on a single Linux host. https://blog.gntech.me/posts/2026-06-05-docker-hardened-images-homelab-migration/ Fri, 05 Jun 2026 16:00:00 -0400 https://blog.gntech.me/posts/2026-06-05-docker-hardened-images-homelab-migration/ Migrate your Docker Compose stack to Docker Hardened Images (DHI) with this practical homelab guide. Drop-in replacements, CVE scanning, and real-world migration patterns for Postgres, Redis, Nginx, and more. https://blog.gntech.me/posts/2026-05-30-portainer-docker-deployment-homelab/ Sat, 30 May 2026 17:00:00 -0400 https://blog.gntech.me/posts/2026-05-30-portainer-docker-deployment-homelab/ Deploy Portainer with Docker Compose for visual container management across your homelab. Multi-host agent setup, stack deployment, security hardening, and backup strategies. https://blog.gntech.me/posts/2026-05-30-docker-cve-2026-31431-copy-fail-mitigation/ Sat, 30 May 2026 09:30:00 -0400 https://blog.gntech.me/posts/2026-05-30-docker-cve-2026-31431-copy-fail-mitigation/ Complete guide to CVE-2026-31431 'Copy Fail' for Docker users. How the Linux kernel AF_ALG privilege escalation works and how to mitigate it with seccomp, AppArmor, and kernel updates. https://blog.gntech.me/posts/2026-05-26-docker-healthchecks-compose-service-readiness/ Tue, 26 May 2026 16:00:00 +0000 https://blog.gntech.me/posts/2026-05-26-docker-healthchecks-compose-service-readiness/ Configure Docker healthchecks in Compose for real service readiness — depends_on with service_healthy, custom check scripts, practical examples for PostgreSQL, Nginx, Redis, and debugging common failures. https://blog.gntech.me/posts/2026-05-26-docker-trivy-vulnerability-scanning/ Tue, 26 May 2026 13:30:00 +0000 https://blog.gntech.me/posts/2026-05-26-docker-trivy-vulnerability-scanning/ Automate Docker container vulnerability scanning with Trivy in your homelab — scan images for CVEs, detect misconfigurations and secrets, integrate with systemd timers or cron, and get actionable security reports. https://blog.gntech.me/posts/2026-05-24-docker-compose-env-variables/ Sun, 24 May 2026 10:00:00 -0400 https://blog.gntech.me/posts/2026-05-24-docker-compose-env-variables/ Complete guide to Docker Compose environment variables — .env file scoping rules, variable substitution syntax, env_file vs environment blocks, and when to use Docker secrets instead of env vars. With real compose.yml examples for homelab deployments. https://blog.gntech.me/posts/2026-05-23-docker-gpu-acceleration-homelab/ Sat, 23 May 2026 07:00:00 -0400 https://blog.gntech.me/posts/2026-05-23-docker-gpu-acceleration-homelab/ Enable GPU acceleration in Docker containers using the NVIDIA Container Toolkit. Covers installation, Docker Compose GPU device config, Ollama AI inference, Jellyfin transcoding, and troubleshooting. https://blog.gntech.me/posts/2026-05-21-mikrotik-containers-docker-routeros/ Thu, 21 May 2026 17:00:00 -0400 https://blog.gntech.me/posts/2026-05-21-mikrotik-containers-docker-routeros/ Deploy Docker containers directly on MikroTik RouterOS 7 — enable container mode, configure veth bridges, pull images, and run Pi-hole, AdGuard Home, Tailscale, or NetBird on your router. https://blog.gntech.me/posts/2026-05-21-prometheus-grafana-monitoring-stack/ Thu, 21 May 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-05-21-prometheus-grafana-monitoring-stack/ Deploy a complete homelab monitoring stack with Prometheus, Grafana, Node Exporter, and cAdvisor using Docker Compose — with preconfigured dashboards and Alertmanager integration. https://blog.gntech.me/posts/2026-05-21-docker-ipv6-networking-guide/ Thu, 21 May 2026 07:00:00 -0400 https://blog.gntech.me/posts/2026-05-21-docker-ipv6-networking-guide/ Configure Docker with full IPv6 support in your homelab — enable dual-stack networking, configure compose networks, assign Global Unicast or ULA, and run Traefik with IPv6 entry points.