[Unit]
Description = Firefox
ConditionUser = !root
ConditionEnvironment = DISPLAY
Wants = ioslay@%i.service

[Service]
ExecStart = /usr/local/bin/firefox --new-instance --display=%i
Restart = on-failure
PassEnvironment = DISPLAY XAUTHORITY
MemoryMax = 50%

[Install]
Also=ioslay@.service