Answer
Docker inserts a shim process between runc and dockerd so containers continue even if dockerd restarts.
Quick Answer
runc creates namespaces and the container process, then signals containerd-shim that it's ready. dockerd waits for the shim to confirm container start before returning. Internal locking and a handshake protocol prevent race conditions between runc exiting and the shim beginning to manage the container lifecycle.
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