update docker container to run on ubuntu 20.04

[williambrandler]

Signed-off-by: William Brandler William.Brandler@databricks.com

What changes are proposed in this pull request?

Update glow docker container to run on ubuntu 20.04 by default

To match Databricks runtime 9.x and above

How is this patch tested?

• [ ] Unit tests
• [ ] Integration tests
• [ ] Manual tests

(Details)

[codecov[bot]]

Codecov Report

Merging #452 (789cb87) into master (6bf481f) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #452   +/-   ##
=======================================
  Coverage   93.63%   93.63%           
=======================================
  Files          95       95           
  Lines        4824     4824           
  Branches      466      466           
=======================================
  Hits         4517     4517           
  Misses        307      307           

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