Update dockerfile setup to use mamba

[ayushdg]

With packaging updates for different min versions in dask-sql the conda solver fails to solve properly in our dockerfile setup. Switching to mamba seems to resolve this.

[codecov-commenter]

Codecov Report

Merging #583 (3c6be77) into main (0db4506) will increase coverage by 0.14%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #583      +/-   ##
==========================================
+ Coverage   88.45%   88.60%   +0.14%     
==========================================
  Files          69       69              
  Lines        3500     3500              
  Branches      707      707              
==========================================
+ Hits         3096     3101       +5     
+ Misses        317      308       -9     
- Partials       87       91       +4     

Impacted Files	Coverage Δ
dask_sql/_version.py	34.00% <0.00%> (+1.44%)	:arrow_up:

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[jdye64]

@ayushdg this is marked as a draft but seems ready. Are you ready for a review?

[ayushdg]

@ayushdg this is marked as a draft but seems ready. Are you ready for a review? Not yet. The core issues is fixed but I'm also trying to update GitHub actions to test docker changes if those files are touched and I need to resolve some issues there.

[jdye64]

This isn't my area of expertise but wanted to say thank you @ayushdg because I will definitely be consuming this and benefiting!

[ayushdg]

Going through the errors. It looks like docker cloud step still seems to be trying to fetch some image information from docker hub instead of using the image that is present locally (loaded at the previous step). Pinging @jacobtomlinson in case you have any suggestions on how we can use the image generated in the main step for a subsequent step without pushing to docker hub.