3posts
A sysadmin's hands-on walkthrough of a scratch-based, rootless Docker image for the SimpleX Chat CLI. Since the chat server binds 127.0.0.1 only (issue #6449 is still open), a small socat bridge exposes it on 0.0.0.0. Full multi-stage Dockerfile, build and run commands, and the honest trade-offs.
A sysadmin-grade comparison of Docker Compose and Kubernetes for running many self-hosted apps: where Compose starts to hurt, how k3s changes the calculus, and how rootful Kubernetes is actually secured with RBAC, admission control, securityContext, seccomp, and network policies, and how that differs from rootful Docker.
A practical, sysadmin-grade comparison of Docker and Podman for running many self-hosted apps: Compose vs Quadlet, rootful vs rootless security and host-tool debugging, Watchtower vs podman auto-update, Docker API compatibility, and when Kubernetes is the real answer.