Make image name handling in docker/ecr_publish consistent with docker/build

[AdeelH]

Overview

This PR fixes a discrepancy between the image name being used by the build and ecr_publish scripts for AMD64 builds. It also adds an --arm64 option to ecr_publish and slightly improves the formatting of script help texts.

Checklist

• [ ] Added needs-backport label if PR is bug fix that applies to previous minor release
• Ran scripts/format_code and committed any changes
• Documentation updated if needed
• PR has a name that won't get you publicly shamed for vagueness

Notes

N/A

Testing Instructions

• docker/ecr_publish
• docker/ecr_publish --arm64
• docker/ecr_publish --help

[codecov]

Codecov Report

Merging #1559 (d48d964) into master (1a02e00) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1559      +/-   ##
==========================================
- Coverage   75.78%   75.77%   -0.02%     
==========================================
  Files         193      193              
  Lines        9214     9214              
==========================================
- Hits         6983     6982       -1     
- Misses       2231     2232       +1     

Impacted Files	Coverage Δ
...er/dataset/visualizer/classification_visualizer.py	97.36% <0.00%> (-2.64%)	⬇️

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