Remove redundant docker argument

[avantgardnerio]

Which issue does this PR close?

Closes issue #2751 .

Rationale for this change

Minor syntax fix to restore previous functionality.

Are there any user-facing changes?

No

[andygrove]

I reproduced the issue locally and confirmed that this PR fixes it. Thanks @avantgardnerio

[andygrove]

@xudong963 fyi

[codecov-commenter]

Codecov Report

Merging #2752 (50c9f8a) into master (3f4aaab) will decrease coverage by 0.00%.
The diff coverage is n/a.

❗ Current head 50c9f8a differs from pull request most recent head 29942f4. Consider uploading reports for the commit 29942f4 to get more accurate results

@@            Coverage Diff             @@
##           master    #2752      +/-   ##
==========================================
- Coverage   84.96%   84.95%   -0.01%     
==========================================
  Files         271      271              
  Lines       48053    48053              
==========================================
- Hits        40827    40824       -3     
- Misses       7226     7229       +3     

Impacted Files	Coverage Δ
datafusion/optimizer/src/utils.rs	33.68% <0.00%> (-0.53%)	⬇️
datafusion/expr/src/logical_plan/plan.rs	73.71% <0.00%> (-0.40%)	⬇️

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[xudong963]

Thanks @avantgardnerio