BookStack is a single-replica Deployment backed by a ReadWriteOnce
PVC (`bookstack-config`). The default RollingUpdate strategy creates
the new pod before terminating the old one, and the two pods cannot
share the RWO volume — so every rollout deadlocks on
`Multi-Attach error for volume`.
Switching to `strategy: Recreate` terminates the old pod first,
releases the PVC, and then starts the new pod. Brief downtime is
expected on rollout, but rollouts actually complete.
Discovered while rolling out the `/status` probe fix (previous commit).
Co-Authored-By: Paperclip <noreply@paperclip.ing>
