[ticket/12775] Replace functions_container with a container_builder class. * Nicofuma/ticket/12775: (34 commits) [ticket/12775] Set dbal.conn.driver as synthetic during installation [ticket/12775] Add the definition of dbal.conn in fixtures/config/services.yml [ticket/12775] Inject the connection when created in the container [ticket/12775] Extract the vars later in install/install_update.php [ticket/12775] Rename config_php_handler to config_php_file container_builder [ticket/12775] Set defined_vars as a property of config_php_file [ticket/12775] Fix doc blocks in the container builder [ticket/12775] Remove useless includes of config.php [ticket/12775] Move phpbb_convert_30_dbms_to_31 into the config file class [ticket/12775] Fix comments [ticket/12775] Update doc blocks [ticket/12775] Fix container_builder [ticket/12775] Rename config_php to config_php_file [ticket/12775] Renamed to \phpbb\di\container_builder [ticket/12775] Remove the last include of functions_container [ticket/12775] Fix unit tests [ticket/12775] Add tests for \phpbb\config_php [ticket/12775] Add tests for the container factory [ticket/12775] Use a field instead of a local var in load_config_var() [ticket/12775] Update container and config in install/ ...