suspend-lock@.service

# -- usage -- 
# 1. place in /etc/systemd/system/ 
# 2. systemctl enable <name-of-service>@user


[Unit]
Description=User suspend actions
Before=sleep.target

[Service]
User=%I
Type=forking
Environment=DISPLAY=:0
ExecStartPre=
ExecStart=/usr/bin/i3lock-fancy
ExecStartPost=/usr/bin/sleep 0.2

[Install]
WantedBy=sleep.target