docker: geoserver-213

Fehlend: imagepyramid plugin download von https://sourceforge.net/projects/geoserver/files/GeoServer/2.13.0/extensions/geoserver-2.13.0-pyramid-plugin.zip/download

Fehlend: Arimo etc fonts

Volumes: /mnt/gdi/geoserver/

Testpyramid: stadtplan/