Add openssl platform dependency

[ndtreviv]

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Description

Adds openssl to platform dependencies so the docker-entrypoint file can run without errors.

Motivation and context

The docker-entrypoint.sh file references openssl when generating certificates in cases where SSL=true. At the moment openssl isn't installed, so this crashes the container out.

Related issues

#5561

Checklist

Add tests to cover the changes

N/A

Code conforms with the style guide

N/A

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