Answer
Exec form uses no shell and passes signals properly. Shell form uses /bin/sh -c and makes signal forwarding harder.
Quick Answer
Shell form (ENTRYPOINT cmd arg) runs through /bin/sh -c — the shell interprets it, so signal handling is poor (PID 1 is the shell, not your app). Exec form (ENTRYPOINT ["cmd", "arg"]) runs the process directly as PID 1 — receives signals correctly for graceful shutdown. Always use exec form in production.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ