When enabled, the Docker Swarm service backing this agent is removed immediately after the agent finishes a single Jenkins build, instead of being kept alive for the idle timeout window.

Useful when you need a guaranteed-clean filesystem and process state per build (for example, security-sensitive jobs or workloads that leak temporary state).

Trade-offs:

• Each build pays the full container provisioning cost (image pull + agent connection handshake), which adds tens of seconds to queue time.
• Number of Executors must be set to 1. The one-shot retention strategy terminates the agent after the first build completes, which would abort any other build still running on a second executor.
• If a parent template (referenced via Inherit From) has this option enabled, child templates inherit it and cannot disable it.