add timeout

[mr-c]

No description provided.

[codecov]

Codecov Report

Merging #783 into master will increase coverage by 4.79%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #783      +/-   ##
==========================================
+ Coverage   64.18%   68.97%   +4.79%     
==========================================
  Files          28       32       +4     
  Lines        4626     5151     +525     
  Branches     1230     1372     +142     
==========================================
+ Hits         2969     3553     +584     
+ Misses       1319     1259      -60     
- Partials      338      339       +1

Impacted Files	Coverage Δ
cwltool/docker_id.py	52.08% <0%> (-2.27%)	⬇️
cwltool/main.py	37.36% <0%> (ø)
cwltool/utils.py	48.06% <0%> (ø)
cwltool/flatten.py	78.94% <0%> (ø)
cwltool/__init__.py	100% <0%> (ø)
cwltool/load_tool.py	82.23% <0%> (+1.52%)	⬆️
cwltool/job.py	63.19% <0%> (+3.58%)	⬆️
cwltool/resolver.py	44.44% <0%> (+4.44%)	⬆️
cwltool/sandboxjs.py	51.5% <0%> (+4.51%)	⬆️
cwltool/validate_js.py	86.48% <0%> (+5.4%)	⬆️
... and 8 more

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