matrix-docker-ansible-deploy/roles/matrix-server/templates/systemd/matrix-coturn.service.j2

[Unit]
Description=Matrix Coturn server
After=docker.service
Requires=docker.service

[Service]
Type=simple
ExecStartPre=-/usr/bin/docker kill matrix-coturn
ExecStartPre=-/usr/bin/docker rm matrix-coturn
ExecStart=/usr/bin/docker run --rm --name matrix-coturn \
			--log-driver=none \
			--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
			-p 3478:3478 \
			-p 3478:3478/udp \
			-p {{ matrix_coturn_turn_udp_min_port }}-{{ matrix_coturn_turn_udp_max_port }}:{{ matrix_coturn_turn_udp_min_port }}-{{ matrix_coturn_turn_udp_max_port }}/udp \
			-v {{ matrix_synapse_config_dir_path }}:/matrix-config:ro \
			-v {{ matrix_coturn_config_path }}:/turnserver.conf:ro \
			{{ matrix_coturn_docker_image }} \
			-c /turnserver.conf
ExecStop=-/usr/bin/docker kill matrix-coturn
ExecStop=-/usr/bin/docker rm matrix-coturn
Restart=always
RestartSec=30

[Install]
WantedBy=multi-user.target