Investigate and document installation issues with the systemd $PATH and exiftool/ffmpeg
There have been a few reports on the pleroma irc channel recently of people not having exiftool
available in Pleroma after installing it. This seems to mostly happen on Arch Linux installations. The reason seems to be that Arch Linux doesn't set the default $PATH to include wherever exiftool
happens to reside.
We should figure out how widespread this issue is (does it also happen on debian/ubuntu?) and document it in our installation guides.