This docker image is based on an automated build (https://hub.docker.com/r/benizar/pg-pgis-non-persistent/). It contains a running PostgreSQL 9.5 + PostGIS 2.1.8 installation with a full SIOSE 2005 database. This docker has no data volumes defined, it is only used for experimental purposes.
SIOSE 2005 is a geospatial database that stores land use/land cover information as relational tables, but trying to follow an object-oriented model. Please, visit the SIOSE web page, if you want to know more (http://www.siose.es/).