Оверлей Spring Boot и Maven war

Я работаю с мульти-модулем Maven с войной, зависящей от другой войны.

Веб-приложение Spring Boot зависит от базового веб-приложения, которое обслуживает только html-файлы.

Когда я запускаю приложение Spring Boot, я могу получить доступ к службам и html из основного веб-приложения (Spring Boot one), но не могу получить доступ к файлам html из войны зависимостей (404). Но эти html-файлы хорошо упакованы в войну веб-приложений Spring Boot ...

Вот проект, демонстрирующий проблему:
https://github.com/cthiebault/spring-boot-war-overlays

В этом проекте есть 2 боевых модуля:

• dependency-webapp: базовое веб-приложение, обслуживающее только html (/dependency/index.html)
• main-webapp: веб-приложение Spring Boot (скопировано из Spring Guides) gs-serve-web-content). Это веб-приложение зависит от dependency-webapp.

Вот файл main-webapp pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>spring-boot-overlays</groupId>
    <artifactId>parent</artifactId>
    <version>0.1.0-SNAPSHOT</version>
  </parent>

  <artifactId>main-webapp</artifactId>
  <packaging>war</packaging>

  <dependencies>
    <dependency>
      <groupId>spring-boot-overlays</groupId>
      <artifactId>dependency-webapp</artifactId>
      <version>0.1.0-SNAPSHOT</version>
      <type>war</type>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <configuration>
          <overlays>
            <overlay>
              <groupId>spring-boot-overlays</groupId>
              <artifactId>dependency-webapp</artifactId>
            </overlay>
          </overlays>
        </configuration>
      </plugin>
    </plugins>
  </build>

  <properties>
    <start-class>hello.Application</start-class>
  </properties>

</project>

Запустите веб-приложение:

mvn install
cd main-webapp
mvn spring-boot:run

РЕДАКТИРОВАТЬ 1: Вот журналы, когда я пытаюсь получить доступ к html-страницам:

http://localhost:8080/index.html -> ОК

o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/index.html]
s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /index.html
s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/index.html]
o.s.w.s.handler.SimpleUrlHandlerMapping  : Matching patterns for request [/index.html] are [/**]
o.s.w.s.handler.SimpleUrlHandlerMapping  : URI Template variables for request [/index.html] are {}
o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapping [/index.html] to HandlerExecutionChain with handler [org.springframework.web.servlet.resource.ResourceHttpRequestHandler@25595861] and 1 interceptor
o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/index.html] is: -1
o.s.w.s.r.ResourceHttpRequestHandler     : Trying relative path [index.html] against base location: ServletContext resource [/]
o.s.w.s.r.ResourceHttpRequestHandler     : Found matching resource: ServletContext resource [/index.html]
o.s.w.s.r.ResourceHttpRequestHandler     : Determined media type 'text/html' for ServletContext resource [/index.html]
o.s.w.s.r.ResourceHttpRequestHandler     : Resource not modified - returning 304
o.s.web.servlet.DispatcherServlet        : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
o.s.web.servlet.DispatcherServlet        : Successfully completed request

http://localhost:8080/dependency/index.html -> ОШИБКА 404

o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/dependency/index.html]
s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /dependency/index.html
s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/dependency/index.html]
o.s.w.s.handler.SimpleUrlHandlerMapping  : Matching patterns for request [/dependency/index.html] are [/**]
o.s.w.s.handler.SimpleUrlHandlerMapping  : URI Template variables for request [/dependency/index.html] are {}
o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapping [/dependency/index.html] to HandlerExecutionChain with handler [org.springframework.web.servlet.resource.ResourceHttpRequestHandler@25595861] and 1 interceptor
o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/dependency/index.html] is: -1
o.s.w.s.r.ResourceHttpRequestHandler     : Trying relative path [dependency/index.html] against base location: ServletContext resource [/]
o.s.w.s.r.ResourceHttpRequestHandler     : Trying relative path [dependency/index.html] against base location: class path resource [META-INF/resources/]
o.s.w.s.r.ResourceHttpRequestHandler     : Trying relative path [dependency/index.html] against base location: class path resource [resources/]
o.s.w.s.r.ResourceHttpRequestHandler     : Trying relative path [dependency/index.html] against base location: class path resource [static/]
o.s.w.s.r.ResourceHttpRequestHandler     : Trying relative path [dependency/index.html] against base location: class path resource [public/]
o.s.w.s.r.ResourceHttpRequestHandler     : No matching resource found - returning 404
o.s.web.servlet.DispatcherServlet        : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
o.s.web.servlet.DispatcherServlet        : Successfully completed request

Есть идеи, что случилось?