Fix Postgres database (-alpine) failing to start on ARM32

group_vars/matrix_servers

@@ -1021,6 +1021,8 @@ matrix_ssl_pre_obtaining_required_service_name: "{{ 'matrix-dynamic-dns' if matr
 
 matrix_postgres_enabled: true
 
+matrix_postgres_architecture: "{{ matrix_architecture }}"
+
 # We unset this if internal Postgres disabled, which will cascade to some other variables
 # and tell users they need to set it (either here or in those variables).
 matrix_postgres_connection_hostname: "{{ 'matrix-postgres' if matrix_postgres_enabled else '' }}"