public static TomcatServiceBuilder builder(File docBase) {
        return builder(requireNonNull(docBase, "docBase").toPath());
    }
Creates a new {@link TomcatServiceBuilder} with the web application at the specified document base,
which can be a directory or a JAR/WAR file.
tomcat10/src/main/java/com/linecorp/armeria/server/tomcat/TomcatService.java