URL of Links in Panels broken when XWiki is installed as default app

This is a huge issue for xwiki 10.11 stable.

Steps to reproduce:

• use docker-compose-postgres.yml of docker xwiki repo
• Set Image to

  xwiki:10.11-postgres-tomcat

• Connect, register Admin, install Standard Flavor

Upon arriving on Main Page, links in Panels are broken, they link to /bin/bin/....

See screenshots.

Other links (in page / NavigationTree / Breadcrumbs) seem fine

This affects at least:

• Application Panel
• My Recent Modifications Panel

The workaround is to set the property "xwiki.webapppath" properly in xwiki.cfg which is mandatory according to the documentation anyway but it was forgotten in the docker image (see XDOCKER-91).