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

[Unit]
Description=Matrix Coturn server
{% for service in matrix_coturn_systemd_required_services_list %}
Requires={{ service }}
After={{ service }}
{% endfor %}

[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 }} \
			--cap-drop=ALL \
			--entrypoint=turnserver \
			--read-only \
			--tmpfs=/var/tmp:rw,noexec,nosuid,size=100m \
			--network={{ matrix_coturn_docker_network }} \
			-p 3478:3478 \
			-p 3478:3478/udp \
			-p 5349:5349 \
			-p 5349:5349/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_coturn_config_path }}:/turnserver.conf:ro \
			{% for volume in matrix_coturn_container_additional_volumes %}
			-v {{ volume.src }}:{{ volume.dst }}:{{ volume.options }} \
			{% endfor %}
			{% for arg in matrix_coturn_container_extra_arguments %}
			{{ arg }} \
			{% endfor %}
			{{ matrix_coturn_docker_image }} \
			-c /turnserver.conf

ExecStop=-/usr/bin/docker kill matrix-coturn
ExecStop=-/usr/bin/docker rm matrix-coturn

# This only reloads certificates (not other configuration).
# See: https://github.com/coturn/coturn/pull/236
ExecReload=/usr/bin/docker exec matrix-coturn kill -USR2 1

Restart=always
RestartSec=30

[Install]
WantedBy=multi-user.target