Add TPU tests for JAX and Tensorflow.

[hertschuh]

Using the runners.

• Update description
• Remove unneeded "names" in yml
• Remove empty lines in yml
• Remove jax[cpu] in requirements-tensorflow-tpu.txt and add late imports

[gemini-code-assist]

Summary of Changes

Hello @hertschuh, 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 introduces the foundational infrastructure required to enable comprehensive testing of Keras with both JAX and TensorFlow backends on Tensor Processing Units (TPUs). It establishes distinct build environments, including a specialized Dockerfile for JAX/TPU and dedicated dependency lists for both frameworks, ensuring all necessary TPU-related libraries are correctly installed for robust test execution.

Highlights

• JAX TPU Test Environment: A new Dockerfile has been added to establish a dedicated testing environment for Keras using the JAX backend with TPU support. This includes Python 3.10, essential system packages, and configuration for the JAX backend.
• JAX TPU Dependencies: A new requirements-jax-tpu.txt file has been introduced, specifying the necessary dependencies such as tensorflow-cpu, jax[tpu], and jax-tpu-embedding to facilitate JAX-based TPU testing.
• TensorFlow TPU Dependencies: A new requirements-tensorflow-tpu.txt file has been added, outlining the specific tensorflow-tpu dependency required for TensorFlow-based TPU testing.

Ignored Files

• Ignored by pattern: .github/workflows/** (1)
  • .github/workflows/actions.yml

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[gemini-code-assist]

Code Review

This pull request adds Docker and requirements files for running JAX and TensorFlow tests on TPUs. My review has identified several critical issues that will cause the build and dependency installation to fail. In the Dockerfile, there's a syntax error. In the requirements files, non-existent versions of TensorFlow are specified. I have also provided some medium-severity suggestions for the Dockerfile to improve build performance and maintainability.