Infrastructure

Extending Official Docker Images with Dockerfile
Learn how to extend official Docker images with a Dockerfile—example adds FFmpeg to Nextcloud for video thumbnails and previews.
Nextcloud felt sluggish, MariaDB was the bottleneck
Nextcloud lagged because MariaDB was maxed—InnoDB tuning + repairs + throttling fixed it.
Migrating a Docker image to an air-gapped VM
Step-by-step guide to migrating Docker images to an air-gapped VM using docker save/load, plus tips for tagging, updates, and rollback.