How to load a local DwCA, using file:///dwca.zip about clb-docker HOT 1 OPEN

That is currently not supported.
The only way currently to load a local dataset is to place it manually into the archiveRepository with the proper name matching its datasetKey with the suffix .dwca. That is currently configured here in the project: https://github.com/mskyttner/clb-docker/blob/master/cli/config/normalizer.yaml#L20

So the file for the dataset {UUID} would be in this case:
/usr/local/clb/data/dwca/{UUID}.dwca

Then you need to trigger a normalizer message for that UUID, sth that can be done with clb-admin.sh NORMALIZE --key {UUID}

from clb-docker.