Deploying Preprocessor Healthchecks

[shahdyousefak]

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Since we're deploying to production, we should move the healthchecks out of test-docker-compose.yml to their corresponding dockerfiles. In this PR, I add the healthchecks to the Dockerfiles of grouping, ocr, and semantic segmentation preprocessors.

Required Information

• I referenced the issue addressed in this PR.
• I described the changes made and how these address the issue.
• I described how I tested these changes. -> rebuilt the containers with the updated Dockerfiles; health status reflecting accordingly.

Coding/Commit Requirements

• I followed applicable coding standards where appropriate (e.g., PEP8)
• I have not committed any models or other large files.

New Component Checklist (mandatory for new microservices)

• I added an entry to docker-compose.yml and build.yml.
• I created A CI workflow under .github/workflows.
• I have created a README.md file that describes what the component does and what it depends on (other microservices, ML models, etc.).

OR

• I have not added a new component in this PR.

[jeffbl]

@shahdyousefak Please add description of change (what is this for?) in initial comment, and how it was tested.

[jeffbl]

Looks good, merge when ready