Fix Dockerfile

[Dhananjhay]

Proposed changes

Restrict os platform to linux/amd64

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionalitiy)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation (non-breaking change which adds content to documentation)
• Other (if none of the other choices apply)

Checklist

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• Changes have been tested to ensure that fix is effective or that a feature works.
• Changes pass the unit tests
• Changes pass the wet run tests
• Code has been run through the poe quality task
• I have included necessary documentation or comments (as necessary)
• Any dependent changes have been merged and published

Notes

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