feature :: introduce s3 bucket with docker container

[QuentinMadura]

This PR introduce:

• remove pytest-sugar which is not working with pytest v5.4.0. pytest-sugar is not working with pytest v5.4.0 (released on March 12th 2020) Teemu/pytest-sugar#187.
• the capacity to run a docker container.
• the ability to run an Amazon s3 bucket as a storage inside a docker container.

[codecov]

Codecov Report

Merging #28 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #28   +/-   ##
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  Coverage     100%   100%           
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  Files          16     16           
  Lines         623    623           
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  Hits          623    623

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[PrettyWood]

these dependencies are only for tests. Please move them in the extras_require test section

[piotch]

@QuentinMadura could you do these changes in a branch starting from f/s3_match_true or directly in this branch, since we are going to use this for writing the tests

[PrettyWood]

@piotch Actually I'm in favor of two distinct pull requests : one to add the docker pytest fixture + test the existing s3 code with a container and another one, which actually adds the match support by implementing listdir