Add support for authenticated directory searches

[salbahra]

Added to support environments that require a service account to perform directory lookups.

[Copilot]

Pull Request Overview

This PR adds support for LDAP authenticated directory searches using a service account binding method while retaining the original direct binding method, and updates related documentation accordingly.

• Introduces environment variables and instructions for service account binding in Docker documentation.
• Implements dual LDAP authentication paths (direct and service account binding) in the authentication module.
• Updates README to document both LDAP authentication methods.

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
docs/src/install-guide/docker.md	Added instructions for configuring LDAP service account binding for secure connections.
api/authentication.py	Extended LDAP authentication to support service account binding alongside direct binding.
README.md	Updated documentation to describe both LDAP authentication methods.

Files not reviewed (1)

• Dockerfile: Language not supported

Comments suppressed due to low confidence (1)

api/authentication.py:56

• Consider adding a more descriptive error message or logging before aborting with a 500 status when the service account credentials are missing to aid debugging.

if not service_account_dn or not service_account_password:

[github-actions]

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[Copilot]

Pull Request Overview

This PR adds support for authenticated directory searches by introducing a service account binding option for LDAP authentication, along with associated documentation updates.

• Added a new documentation section for LDAP service account binding in the Docker installation guide.
• Enhanced LDAP authentication in the API to support service account binding before user authentication.
• Updated the README with details on both direct binding and service account binding configurations.

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
docs/src/install-guide/docker.md	Added instructions for configuring LDAP service account binding.
api/authentication.py	Extended LDAP authentication logic to support service account binding.
README.md	Documented the two LDAP binding approaches and environment variables.

Files not reviewed (1)

• Dockerfile: Language not supported

Comments suppressed due to low confidence (1)

api/authentication.py:57

• Consider providing a descriptive error message (e.g., abort(500, description='Missing service account credentials')) to clarify why the service account configuration is incomplete.

if not service_account_dn or not service_account_password: