docker exit with code 0
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An exit code of 0 means the container completed successfully—but probably not what you expected.
This usually happens when the container’s main process finishes instantly, such as running a script instead of a long-running service. Check the
CMDorENTRYPOINTin your Dockerfile.If you intended to keep the container alive, ensure the main process blocks (for example, a web server or worker loop).
Takeaway: Containers live only as long as their main process runs.