Fix NeDB to Postgres importing task for matrix-bridge-appservice-irc

Postgres is not in `matrix_docker_network` anymore, so what we had
before could not possibly work anymore.

roles/custom/matrix-bridge-appservice-irc/defaults/main.yml

@@ -36,6 +36,10 @@ matrix_appservice_irc_database_port: 5432
 matrix_appservice_irc_database_name: matrix_appservice_irc
 matrix_appservice_irc_database_sslmode: disable
 
+# The name of the container network to use when importing a NeDB database into Postgres.
+# For Postgres not working in a container, this can be left empty.
+matrix_appservice_irc_database_container_network: ''
+
 # This is just the Postgres connection string, if Postgres is used.
 # Naming clashes with `matrix_appservice_irc_database_connectionString` somewhat.
 matrix_appservice_irc_database_connection_string: 'postgresql://{{ matrix_appservice_irc_database_username }}:{{ matrix_appservice_irc_database_password }}@{{ matrix_appservice_irc_database_hostname }}:{{ matrix_appservice_irc_database_port }}/{{ matrix_appservice_irc_database_name }}?sslmode={{ matrix_appservice_irc_database_sslmode }}'

roles/custom/matrix-bridge-appservice-irc/tasks/migrate_nedb_to_postgres.yml

@@ -46,7 +46,9 @@
       --rm
       --user={{ matrix_user_uid }}:{{ matrix_user_gid }}
       --cap-drop=ALL
-      --network={{ matrix_docker_network }}
+      {% if matrix_appservice_irc_database_container_network %}
+      --network={{ matrix_appservice_irc_database_container_network }}
+      {% endif %}
       --mount type=bind,src={{ matrix_appservice_irc_data_path }},dst=/data
       --entrypoint=/bin/sh
       {{ matrix_appservice_irc_docker_image }}