Support multiple image tags in build-docker-create using image-file

[agrasth]

• All tests passed. If this feature is not already covered by the tests, I added new tests.
• All static analysis checks passed.
• This pull request is on the dev branch.
• I used gofmt for formatting the code before submitting the pull request.

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Support Multiple Docker Image Tags in build-docker-create
📌 What’s New
This PR enhances the build-docker-create command to support multiple image tags in the --image-file input. Previously, the command handled only a single tag–digest pair. With this change, users can now:

• Provide a comma-separated list of image tags in the file.
• Automatically process and generate build-info for each image tag.
• Improve build metadata accuracy when multiple tags reference the same digest.

🔍 Implementation Details

• Parsed the image-file to handle multiple tag–digest pairs.
• Iterated over each image tag to generate build-info accordingly.
• Ensured backward compatibility with existing single-tag behavior.