Treasure Workflow currently allows for most of the functionality that Digdag allows, with a few exceptions.
sh>
for running shell scripts
rb>
for running ruby scripts
embulk>
for running arbitrary Embulk jobs (but you can use td_load>
for importing bulk data into Treasure Data)
download_file:
parameter with the td>
and other operators for downloading files locally. Instead, use the Treasure Data result export functionality