Add back check_time

[adamtheturtle]

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@f8cda35). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             master   #338   +/-   ##
=======================================
  Coverage          ?   100%           
=======================================
  Files             ?     12           
  Lines             ?    624           
  Branches          ?     28           
=======================================
  Hits              ?    624           
  Misses            ?      0           
  Partials          ?      0

Impacted Files	Coverage Δ
src/dcos_e2e/backends/_docker/__init__.py	100% <ø> (ø)

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