chore: Update service readme

[paul-paliychuk]

🚀	This description was created by Ellipsis for commit 250a16c

Summary:

This PR updates README files with Docker setup instructions for Graphiti service and changes the Docker image name in the GitHub workflow.

Key points:

• Update README.md and server/README.md with Docker setup instructions for Graphiti service.
• Add new section on Graph Service in README.md.
• Reference server/README.md for more Graph Service info.
• Include detailed Docker Compose setup in server/README.md.
• Clarify environment variable setup for graph-service.
• Add example Docker Compose configuration.
• Change Docker image name from zepai/graph-service to zepai/graphiti in GitHub workflow.

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Generated with ❤️ by ellipsis.dev

[ellipsis-dev]

👍 Looks good to me! Reviewed everything up to 28bd49e in 7 seconds

More details

• Looked at 97 lines of code in 2 files
• Skipped 0 files when reviewing.
• Skipped posting 1 drafted comments based on config settings.

1. server/README.md:3

• Draft comment:
  "FastAPI" should be capitalized consistently.

Graph service is a FastAPI server implementing the [graphiti](https://github.com/getzep/graphiti) package.

• Reason this comment was not posted:
  Confidence changes required: 10%
  The README update in the PR is mostly about providing more detailed instructions for setting up the graph service using Docker and Docker Compose. However, there is a minor inconsistency in the naming convention of 'FastAPI'.

Workflow ID: wflow_WDxL3PqzfeC55WNf

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[ellipsis-dev]

👍 Looks good to me! Incremental review on 250a16c in 13 seconds

More details

• Looked at 36 lines of code in 2 files
• Skipped 0 files when reviewing.
• Skipped posting 1 drafted comments based on config settings.

1. .github/workflows/release-service-image.yml:19

• Draft comment:
  Ensure that the image name zepai/graphiti is consistent across all related files and documentation. This change is reflected here, but verify other references in the codebase.
• Reason this comment was not posted:
  Confidence changes required: 80%
  The PR changes the image name from zepai/graph-service to zepai/graphiti in the workflow file. This change should be consistent across all related files, including documentation.

Workflow ID: wflow_bFZ6ZvRqt4xblhXb

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