Update base container for website

[gagb]

Why are these changes needed?

Related issue number

#1502

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[gagb]

@jackgerrits @victordibia -- I have made the fixes but the documentation issue is still there. But its not blocking me so I haven't addressed that here.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d675489) 35.23% compared to head (e56b312) 35.23%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1584   +/-   ##
=======================================
  Coverage   35.23%   35.23%           
=======================================
  Files          44       44           
  Lines        5327     5327           
  Branches     1236     1236           
=======================================
  Hits         1877     1877           
  Misses       3296     3296           
  Partials      154      154           

Flag	Coverage Δ
unittests	35.23% <ø> (ø)

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