The docket contains a lot of the documents filed in the case, including
correspondence to and from the court, some motions, the complaint itself,
and the defendants' response. The full text of interrogatories and requests
for production of documents, as well as the product of the discovery
process, is not available. Some documents are sealed, and only their cover
sheet are available. Some motions are simply not here, presumably because
of court laziness.
I regularly check for new documents on the docket.