A work can be deleted from the rails console (of the web container)
docker exec -it rdms_web_1 /bin/bash
rails c
# delete CRC1280 dataset
crc_dataset_id = "<id_of_the_crc_dataset>"
c = CrcDataset.find(crc_dataset_id)
c.delete
# delete RUB dataset
dataset_id = "<id_of_the_rub_dataset>"
d = Dataset.find(dataset_id)
d.delete