/usr/share/passenger/templates/ is in ruby-passenger 4.0.37-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/passenger/templates/apache2/
/usr/share/passenger/templates/apache2/apache_install_broken.txt.erb
/usr/share/passenger/templates/apache2/apache_must_be_compiled_with_compatible_mpm.txt.erb
/usr/share/passenger/templates/apache2/config_snippets.txt.erb
/usr/share/passenger/templates/apache2/deployment_example.txt.erb
/usr/share/passenger/templates/apache2/installing_against_a_different_apache.txt.erb
/usr/share/passenger/templates/apache2/multiple_apache_installations_detected.txt.erb
/usr/share/passenger/templates/apache2/notify_apache_module_installed.txt.erb
/usr/share/passenger/templates/apache2/possible_solutions_for_compilation_and_installation_problems.txt.erb
/usr/share/passenger/templates/apache2/present_choice_for_no_update_config.txt.erb
/usr/share/passenger/templates/apache2/welcome.txt.erb
/usr/share/passenger/templates/error_layout.css
/usr/share/passenger/templates/error_layout.html.template
/usr/share/passenger/templates/general_error.html.template
/usr/share/passenger/templates/general_error_with_html.html.template
/usr/share/passenger/templates/installer_common/
/usr/share/passenger/templates/installer_common/cannot_access_files_as_root.txt.erb
/usr/share/passenger/templates/installer_common/gem_install_permission_problems.txt.erb
/usr/share/passenger/templates/installer_common/low_amount_of_memory_warning.txt.erb
/usr/share/passenger/templates/installer_common/run_installer_as_root.txt.erb
/usr/share/passenger/templates/installer_common/world_inaccessible_directories.txt.erb
/usr/share/passenger/templates/nginx/
/usr/share/passenger/templates/nginx/ask_for_extra_configure_flags.txt.erb
/usr/share/passenger/templates/nginx/cannot_write_to_dir.txt.erb
/usr/share/passenger/templates/nginx/config_snippets.txt.erb
/usr/share/passenger/templates/nginx/config_snippets_inserted.txt.erb
/usr/share/passenger/templates/nginx/confirm_extra_configure_flags.txt.erb
/usr/share/passenger/templates/nginx/deployment_example.txt.erb
/usr/share/passenger/templates/nginx/nginx_module_sources_not_available.txt.erb
/usr/share/passenger/templates/nginx/other_nginx_installations_exist.txt.erb
/usr/share/passenger/templates/nginx/pcre_checksum_could_not_be_verified.txt.erb
/usr/share/passenger/templates/nginx/pcre_could_not_be_downloaded.txt.erb
/usr/share/passenger/templates/nginx/pcre_could_not_be_extracted.txt.erb
/usr/share/passenger/templates/nginx/possible_solutions_for_compilation_and_installation_problems.txt.erb
/usr/share/passenger/templates/nginx/possible_solutions_for_download_and_extraction_problems.txt.erb
/usr/share/passenger/templates/nginx/query_download_and_install.txt.erb
/usr/share/passenger/templates/nginx/welcome.txt.erb
/usr/share/passenger/templates/standalone/
/usr/share/passenger/templates/standalone/cannot_write_to_dir.txt.erb
/usr/share/passenger/templates/standalone/config.erb
/usr/share/passenger/templates/standalone/download_tool_missing.txt.erb
/usr/share/passenger/templates/standalone/possible_solutions_for_download_and_extraction_problems.txt.erb
/usr/share/passenger/templates/standalone/run_installer_as_root.txt.erb
/usr/share/passenger/templates/undisclosed_error.html.template