Print docker info in installers tests

[agocke]

#53587 seems to only occur on Linux, and seems more likely to occur when run under docker (I managed to repro the issue once a couple months ago under docker, and never again). This change will print the docker info for the installer tests, which might help diagnose the problem.

[dotnet-issue-labeler]

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[ghost]

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Issue Details

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#53587 seems to only occur on Linux, and seems more likely to occur when run under docker (I managed to repro the issue once a couple months ago under docker, and never again). This change will print the docker info for the installer tests, which might help diagnose the problem.

Author:	agocke
Assignees:	-
Labels:	area-Infrastructure-coreclr
Milestone:	-

[agocke]

@ViktorHofer Added two things to try to track down #53587 and #38530

[ghost]

Hello @agocke!

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