Fix the tcp mysql test

[micheas]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @micheas, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the application's startup resilience by addressing potential issues with MySQL database connectivity, particularly in environments where the database might not be immediately available via TCP. It introduces a dedicated entrypoint script that includes a mechanism to patiently wait for the MySQL server to become fully operational before the application attempts to establish a connection, thereby improving overall stability and reducing startup failures.

Highlights

• New Entrypoint Script: Introduced a new Python entrypoint script, ops/entrypoint-cloudrun.py, specifically designed to handle database connectivity in environments that rely on TCP sockets, such as Cloud Run.
• Robust MySQL Connection Waiting: Implemented a wait_for_mysql function within the new entrypoint script. This function actively polls the MySQL server via TCP until it becomes available, preventing application startup failures due to a temporarily unavailable database. It also intelligently skips TCP checks if a Unix socket is configured.
• Dockerfile Update: Modified the Dockerfile to utilize the new entrypoint-cloudrun.py script, ensuring that all new deployments benefit from the improved database connection logic.

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[gemini-code-assist]

Code Review

This pull request updates the Docker entrypoint to a new entrypoint-cloudrun.py script, which adds logic to handle MySQL connections via Unix sockets, presumably to fix a TCP-related test. My review focuses on the new script, with suggestions to improve security, robustness, and maintainability. Key recommendations include using environment variables for database passwords instead of command-line arguments, adding timeouts to subprocess calls to prevent hangs, and refactoring the code to remove magic numbers and improve variable naming. I've also included a small suggestion to clarify a comment in the Dockerfile.