docs: update README to specify correct Docker Compose file (fixes #32)

[Sai-Emani25]

Issue

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Description

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Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Performance improvement
• Refactoring
• Security update

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• Unit tests
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Checklist

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• I have read the CONTRIBUTING.md guidelines
• My code follows the project's code style and conventions
• I have made corresponding changes to the documentation if needed
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests passed locally
• My branch name follows the pattern: feature/issue-<num>-<description> or fix/issue-<num>-<description>
• My commits are well-formatted with descriptive messages (e.g., feat(issue-45): add new feature)
• This PR targets the develop branch (not main - only repository owners can merge to main)
• I assigned myself to the related issue using /assign @username in the issue discussion (NOT in this PR)

Related Issues or Discussions

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Additional Context or Notes

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[github-actions]

⏰ PR Update Needed

This PR has been waiting for 14 days. Please:

• Address review comments if any
• Rebase on latest test branch
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• Push updates

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