🐛 Bug Report

If you try to run experiment in system/docker container where missing git (in system) your code will crush at this line:

https://github.com/catalyst-team/catalyst/blob/master/catalyst/utils/pipelines.py#L4

with message like this:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/git/__init__.py", line 83, in <module>
    refresh()

In our API docs we currently use

.. autosummary::
   Client
   Client.call_stack
   Client.cancel
    ...

To generate a table of Client methods at the top of the page. Later on we use

.. autoclass:: Client
   :members:

to display the docstrings for all the public methods on Client (here an example for

If enter_data() is called with the same train_path twice in a row and the data itself hasn't changed, a new Dataset does not need to be created.

We should add a column which stores some kind of hash of the actual data. When a Dataset would be created, if the metadata and data hash are exactly the same as an existing Dataset, nothing should be added to the ModelHub database and the existing