Apache reverse proxy - File does not exist

Question

I have to configure an Apache web server as reverse proxy for my Sonarqube. The web server is listening on port 8888 and I enforce the Sonarqube to use only the 127.0.0.1 (sonar.properties):

sonar.web.host=127.0.0.1

and I have the following reverse settings (httpd.conf):

ProxyRequests Off
ProxyPreserveHost On
<VirtualHost *:8888>
    ProxyPass /sonar http://127.0.0.1:9000/
    ProxyPassReverse /sonar http://127.0.0.1:9000/
</VirtualHost>

By accessing the URL http://10.130.210.80:8888/sonar the opening page from Sonarqube is displayed but without any CSS style and without images. The Apache error.log tells me the following:

[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/css, referer: http://10.130.210.80:8888/sonar
[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/js, referer: http://10.130.210.80:8888/sonar
[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/js, referer: http://10.130.210.80:8888/sonar
[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/js, referer: http://10.130.210.80:8888/sonar
[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/js, referer: http://10.130.210.80:8888/sonar
[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/images, referer: http://10.130.210.80:8888/sonar
[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/js, referer: http://10.130.210.80:8888/sonar
[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/images, referer: http://10.130.210.80:8888/sonar
[Wed Oct 26 13:07:06 2016] [error] [client 10.130.211.88] File does not exist: /home/www/indian/htdocs/js, referer: http://10.130.210.80:8888/sonar

Answer 1

I got the solution. First, I set a context for the Sonarqube:

sonar.web.context=/sonarqube

Second, for Apache I set the Servername and I set the proxy pass to the Sonarqube's context:

ProxyRequests Off
ProxyPreserveHost On

<VirtualHost *:8888>
  ServerName 10.130.210.80:8888
  ProxyPass /sonarqube http://127.0.0.1:9000/sonarqube
  ProxyPassReverse /sonarqube http://127.0.0.1:9000/sonarqube
</VirtualHost>

and "Tadaaa", works!