The 2026-09-12 deploy of #126 failed instantly -- git pull on the VM hit 'No space left on device' before the deploy script could even capture a rollback target. Every deploy leaves 3 freshly SHA-tagged images that only got cleaned up by a prune gated on a failed compose pull; a failure earlier than that (like this one) never reached it. 96 of 100 local images were unreferenced, 23.76GB reclaimable, disk at 100%.
Move an unconditional docker image prune -af to the top of the deploy, before git pull, and upgrade the post-up -d prune from -f (dangling only) to -af (all unused) so stale tagged images stop re-accumulating. Both are safe: prune -a never touches an image a running container references.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Tbknwttzou4s46PAykmtix