containers

Discover why 'ps' is missing in Debian Docker images causing 'bash: ps: command not found'. Quick fixes: install procps or use docker top for container processes without extra bloat.

Learn how to keep Docker containers running with interactive shells using tty, stdin_open, and long-running commands. Solutions for docker compose exec and entrypoint configuration.

How Docker containers differ from VMs: kernel sharing, namespaces, cgroups, layered images for lightweight isolation, fast startup and consistent deployments.