Add TLS support to Coturn

roles/matrix-coturn/templates/systemd/matrix-coturn.service.j2

@@ -9,15 +9,19 @@ After={{ 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 %}
@@ -25,8 +29,14 @@ ExecStart=/usr/bin/docker run --rm --name matrix-coturn \
 			{% 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