`MakeDirectory=yes` on a `PathChanged=` directive whose target is a
file (not a directory) causes systemd to create the watched path as
an empty directory on unit start. The container's self-updater then
crashes with EISDIR every time it tries to writeFile() the trigger,
and the host script never runs.
The parent `/opt/dashcaddy/updates/` is already created by the
installer/Docker volume, so the flag is redundant and only here as
a footgun. Drop it.
Reproducer: enable the unit on a fresh system, watch
`/opt/dashcaddy/updates/trigger.json` get materialized as a directory
within milliseconds of `systemctl start dashcaddy-updater.path`.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>