tune python demo to use public image

[dtrawins]

🛠 Summary

CVS-179161

🧪 Checklist

• Unit tests added.
• The documentation updated.
• Change follows security best practices.
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[Copilot]

Pull request overview

This PR updates documentation to reference public Docker images instead of requiring users to build images locally. The change simplifies the setup process by removing build instructions and updating Docker image references to use the publicly available openvino/model_server:latest-py tag.

Changes:

• Removed local Docker image build instructions from documentation
• Updated Docker image references from openvino/model_server:py to openvino/model_server:latest-py

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
demos/python_demos/clip_image_classification/README.md	Removed build instructions section and updated Docker run command to use public image tag
demos/continuous_batching/rag/README.md	Removed build instructions and updated multiple Docker run commands to use public image tag

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[Copilot]

The Docker image tag has an extra hyphen (:- latest-py instead of :latest-py). This will cause the Docker command to fail as the image tag is malformed.

Suggested change

	docker run --user $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:-latest-py --add_to_config --config_path /models/config.json --model_name meta-llama/Meta-Llama-3-8B-Instruct --model_path meta-llama/Meta-Llama-3-8B-Instruct --weight-format int8
	docker run --user $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:latest-py --add_to_config --config_path /models/config.json --model_name meta-llama/Meta-Llama-3-8B-Instruct --model_path meta-llama/Meta-Llama-3-8B-Instruct --weight-format int8

[ngrozae]

"git clone" and "cd model_server" commands are required by later steps