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Docker containers often stop right after starting because the foreground process (PID 1) exits, and without a persistent daemon the container shuts down, a behavior explained by Linux init mechanics, process tables, and the Docker runtime architecture.
This article explains why Docker containers often stop right after starting by examining the Linux PID 1 init process, the behavior of foreground versus daemonized commands in Dockerfiles, and how container runtimes like containerd‑shim and runc manage the container’s main process.
This article explains why Docker containers often stop right after starting, covering the role of PID 1, daemon‑off mode, Linux process management concepts like zombie and orphan processes, and how Docker’s containerd‑shim and runC interact to keep containers alive.
Many Docker beginners encounter containers that stop immediately after launch, often due to the CMD process exiting as PID 1; this article explains Linux PID 1 behavior, process tables, zombie and orphan processes, and how Docker’s namespace and runtime components like containerd‑shim and runc affect container lifecycles.