[ci] Add wanda anyscale image builds for release tests

[andrew-anyscale]

This adds wanda-based builds for anyscale images used in release tests.

Changes:

• Add ray-anyscale-cpu/cuda.wanda.yaml for ray anyscale images
• Add ray-llm-anyscale-cuda.wanda.yaml for LLM images
• Add ray-ml-anyscale-cuda.wanda.yaml for ML images
• Add push_anyscale_image.py for pushing to ECR/GCP/Azure via crane
• Update release/build.rayci.yml with build and push steps

Topic: anyscale-image
Relative: wanda-image-upload
Signed-off-by: andrew andrew@anyscale.com

[andrew-anyscale]

Reviews in this chain:
└#60455 [ci] port Buildkite Ray Images to Wanda
　├#59937 [ci] Add wanda anyscale image builds for release tests
　└#60539 Consolidate RAY_VERSION to use rayci.env as single source of truth

[andrew-anyscale]

#	head	base	diff	date	summary
0	f963b425	f104bf59	diff	Jan 7 7:57 AM	8 files changed, 553 insertions(+), 24 deletions(-)
1	07109714	288cadb6	diff	Jan 7 7:58 AM	0 files changed
2	4cdb2dd9	46cc8625	diff	Jan 7 8:38 AM	2 files changed, 238 insertions(+), 5 deletions(-)
3	f65669a5	70df7561	rebase	Jan 7 11:29 AM	0 files changed
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5	af3b600e	04cfd26a	rebase	Jan 7 17:29 PM	0 files changed
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7	1f049e81	84d74797	diff	Jan 8 8:27 AM	2 files changed, 12 insertions(+), 12 deletions(-)
8	d43ccd7f	c275fe24	rebase	Jan 8 8:32 AM	0 files changed
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37	ebae2c55	f4e1306c	diff	Jan 15 17:41 PM	5 files changed, 12 insertions(+), 8 deletions(-)
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42	cdc64549	6a668ed7	diff	Jan 20 10:30 AM	4 files changed, 12 insertions(+), 11 deletions(-)
43	76c20e1b	54ca98e5	rebase	Jan 20 11:57 AM	0 files changed
44	14ef5914	54ca98e5	diff	Jan 21 9:31 AM	1 file changed, 1 insertion(+)
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51	a32f66a4	d1a8111b	diff	Jan 27 10:30 AM	1 file changed, 4 insertions(+), 4 deletions(-)
52	6dd8afe4	d1a8111b	diff	Jan 27 10:34 AM	1 file changed, 4 insertions(+), 4 deletions(-)
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71	9f283393	ba9c8603	diff	Jan 30 13:28 PM	1 file changed, 14 insertions(+), 16 deletions(-)
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75	e4ba419d	1609eac2	diff	Jan 30 14:01 PM	1 file changed, 7 insertions(+), 25 deletions(-)
76	bfbedb45	1609eac2	diff	Jan 30 14:04 PM	2 files changed, 12 insertions(+), 5 deletions(-)
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78	2becfe0c	0ec84ea3	diff	Jan 30 15:13 PM	2 files changed, 21 insertions(+), 36 deletions(-)
79	bda71c76	0ec84ea3	diff	Jan 30 17:25 PM	2 files changed, 10 insertions(+), 6 deletions(-)
80	436f981d	ea2ca724	diff	Jan 30 17:26 PM	0 files changed

[gemini-code-assist]

Code Review

This pull request refactors the Anyscale image build process to use Wanda for building and a new Python script for pushing images to multiple registries. The changes include new Wanda configuration files, the push_anyscale_image.py script, and updates to the Buildkite pipeline. My review identifies a few critical issues that will break the build, including a missing file in a Bazel target and an incomplete matrix configuration in the pipeline. I've also provided several suggestions to improve maintainability by reducing code duplication and making parts of the new script less brittle.

[gemini-code-assist]

The GPU_PLATFORM is hardcoded here. The comment mentions it must match a definition in another file, which makes this brittle. If the default GPU platform changes, this script will require a manual update, which can be easily missed. Consider sourcing this value from a shared configuration file or passing it as a command-line argument to make the script more robust and maintainable.

[gemini-code-assist]

The logic for parsing the CUDA version string using platform.split('.') is fragile. It assumes a specific format with dots as separators and might fail with an IndexError if the platform string format changes (e.g., cu12-cudnn8). Using a regular expression would be more robust for extracting the version parts. For example: re.match(r"cu(\\d+)\\.(\\d+)", platform).

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.