ERROR: Named volume “xplore:/root/xPlore/rtdata:rw” is used in service “dsearch” but no declaration was found in the volumes section

This error often appears when you are trying to create a volume as a subfolder of your current host folder. In that case, the syntax would have to be:

volumes:
    - ./centdb_odbc:/opt/dctm/odbc

In other words: The relative path “./” is missing!