Raspberry Pi Slideshow using feh and systemd user service unit

setup.sh

#Flash 32bit os using rpi imager (with ssh and wifi settings) then login via ssh and configure device
ssh-import-id-gh gbrayut
sudo apt update
sudo apt install -y vim feh
sudo apt upgrade -y

# Copy pictures to rpi
scp -r /path/to/slideshow gbrayut@gbrpi3b:~/

# Configure systemd user unit file
mkdir -p ~/.config/systemd/user/
scp slideshow.service gbrayut@gbrpi3b:~/.config/systemd/user/
systemctl --user daemon-reload
systemctl --user disable slideshow;systemctl --user enable slideshow.service
systemctl --user start slideshow.service
systemctl --user status slideshow.service

# Prevent screen timeout (NOTE these were added to the service unit)
export DISPLAY=:0
xset -dpms & xset s off & xset s noblank

# Test crash or stop service
sudo pkill feh
systemctl --user stop slideshow

# Modify service
vim ~/.config/systemd/user/slideshow.service 
systemctl --user daemon-reload; systemctl --user restart slideshow

slideshow.service

[Unit]
Description=Slideshow using feh
After=graphical.target

[Service]
Environment=DISPLAY=:0
Environment=XAUTHORITY=/home/gbrayut/.Xauthority
#Type=forking
ExecStartPre=/bin/bash -c '/bin/sleep 5; xset -dpms; xset s off; xset s noblank'
ExecStart=/usr/bin/feh --quiet --preload --recursive --full-screen --auto-zoom --reload 60 -Y --slideshow-delay 9.0 ${HOME}/slideshow
Restart=always
RestartSec=5

[Install]
WantedBy=default.target