cat /etc/systemd/system/home-assistant@.service
[Unit]
Description=Home Assistant
Requires=docker.service
After=docker.service postgresql.service

[Service]
Restart=always
RestartSec=3
User=%i
ExecStart=/usr/bin/docker run \
--name=home-assistant-%i \
-v /home/%i/.homeassistant/:/config \
-v /etc/localtime:/etc/localtime:ro \
-v /tmp/.s.PGSQL.5432:/tmp/.s.PGSQL.5432 \
--net=host \
homeassistant/home-assistant
ExecStop=/usr/bin/docker stop -t 2 home-assistant-%i
ExecStopPost=/usr/bin/docker rm -f home-assistant-%i

[Install]
WantedBy=multi-user.target