As @Carlos_Gonzalez points out only
cbdocloader supports zip files but it really isn’t intended for customer data sets only our canned examples.
Although you could unzip the archive “/opt/couchbase/samples/travel-sample.zip” and determine the “structure” needed, I would also highly recommend you don’t go down this path as the internal format of these ZIP files are subject to big changes come Couchbase 7.0
IMHO you could easily write a shell script to extract your ZIP file and load any data files found via the
cbimport utility however you need to take care on key generation i.e. the “-g” flag.