Single-file bind mounts pin the container to that file's inode at
mount time. sed -i and most editors write-then-rename (atomic write),
which swaps in a new inode at the same path -- the container kept
reading the orphaned original and never saw edits, silently breaking
the hot-reload from the previous commit. Caught by actually testing
the reload live instead of trusting the code. Directory mounts
resolve paths dynamically and don't have this problem.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
jhodgkin
5143840d90