Clean up RPC socket after stopping matrix-appservice-kakaotalk-node

roles/matrix-bridge-appservice-kakaotalk/templates/systemd/matrix-appservice-kakaotalk-node.service.j2

@@ -28,8 +28,12 @@ ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-appservice-kak
 			-v {{ matrix_appservice_kakaotalk_data_path }}:/data:z \
 			{{ matrix_appservice_kakaotalk_node_docker_image }}
 
+ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill --signal=TERM matrix-appservice-kakaotalk-node 2>/dev/null || true'
+# Intentional delay so that the container has time to stop gracefully and remove the RPC socket.
+ExecStop=-{{ matrix_host_command_sleep }} 5
 ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-appservice-kakaotalk-node 2>/dev/null || true'
 ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-appservice-kakaotalk-node 2>/dev/null || true'
+ExecStop=-{{ matrix_host_command_sh }} -c 'rm {{ matrix_appservice_kakaotalk_data_path }}/rpc.sock 2>/dev/null || true'
 
 Restart=always
 RestartSec=30