Added explicit error message for double uri/docker-image [WB-10302]

[gtarpenning]

Fixes WB-10302

Description

One-Liner improved error messaging for entering both a URI and docker image path

Testing

Sending both or one or none and getting my fancy new error message.

[codecov]

Codecov Report

Merging #4069 (e851f31) into master (e36228d) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head e851f31 differs from pull request most recent head 2015335. Consider uploading reports for the commit 2015335 to get more accurate results

@@           Coverage Diff           @@
##           master    #4069   +/-   ##
=======================================
  Coverage   82.73%   82.73%           
=======================================
  Files         255      255           
  Lines       32264    32266    +2     
=======================================
+ Hits        26694    26696    +2     
  Misses       5570     5570           

Flag	Coverage Δ
functest	54.97% <0.00%> (+0.06%)	⬆️
unittest	73.46% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
wandb/sdk/launch/utils.py	92.98% <100.00%> (+0.04%)	⬆️
wandb/filesync/step_prepare.py	93.67% <0.00%> (-1.27%)	⬇️
wandb/sdk/service/server_sock.py	91.87% <0.00%> (-1.02%)	⬇️
wandb/jupyter.py	56.64% <0.00%> (-0.40%)	⬇️
wandb/sdk/wandb_run.py	90.95% <0.00%> (-0.25%)	⬇️
wandb/sdk/lib/git.py	78.39% <0.00%> (ø)
wandb/sdk/wandb_setup.py	89.00% <0.00%> (+0.50%)	⬆️
wandb/sdk/lib/printer.py	90.84% <0.00%> (+0.65%)	⬆️
wandb/errors/term.py	95.65% <0.00%> (+2.17%)	⬆️
wandb/sdk/internal/meta.py	90.18% <0.00%> (+3.06%)	⬆️

[hu-po]

lgtm