[CI] Update docker image ci_lint to obtain Python 3.6 from ppa:deadsn…#4506

Merged

tqchen merged 1 commit intoapache:masterfrom leandron:tvm-4505

Dec 13, 2019

+1-1

Commits on Dec 11, 2019

[CI] Update docker image ci_lint to obtain Python 3.6 from ppa:deadsnakes/ppa (#4505 )
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