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Adds support for including multimodal projector file when packaging a model via docker model package.
Fixes: #438

@ilopezluna ilopezluna requested a review from a team December 18, 2025 08:59
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Summary of Changes

Hello @ilopezluna, 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 docker model package command by adding support for packaging multimodal projector files. A new --mmproj flag is introduced, enabling users to specify a projector file which will be included in the model OCI artifact. This change facilitates the creation and distribution of multimodal models, ensuring proper validation for the provided file path and updating all relevant command descriptions and documentation.

Highlights

  • New --mmproj flag: Introduced a new --mmproj flag to the docker model package command, allowing users to specify an absolute path to a multimodal projector file for inclusion in the packaged model.
  • Command Usage and Description Updates: The Use and Long descriptions for the package command have been updated to reflect the new --mmproj option and its purpose for multimodal models.
  • Path Validation: Added validation to ensure that the path provided with the --mmproj flag is an absolute path, returning an error if it is not.
  • Model Packaging Integration: The internal packageModel function now checks for the mmprojPath option and, if provided, uses pkg.WithMultimodalProjector to add the specified file to the model package.
  • Documentation Updates: The command-line reference documentation (docker_model_package.yaml and model_package.md) has been updated to include details about the new --mmproj flag.

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Hey there - I've reviewed your changes and they look great!


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Code Review

This pull request introduces support for packaging multimodal models by adding a --mproj flag to include a multimodal projector file. The changes are consistently applied across the CLI command, its documentation, and the underlying packaging logic. The implementation is clear and follows existing patterns in the codebase. I have one suggestion regarding code duplication in path validation which could improve maintainability.

Comment on lines 121 to 129
if opts.mmprojPath != "" {
if !filepath.IsAbs(opts.mmprojPath) {
return fmt.Errorf(
"mmproj path must be absolute.\n\n" +
"See 'docker model package --help' for more information",
)
}
opts.mmprojPath = filepath.Clean(opts.mmprojPath)
}
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medium

This validation logic for mmprojPath is very similar to the validation for ggufPath (lines 69-77) and licensePaths (lines 110-118). To improve maintainability and reduce code duplication, consider extracting this logic into a helper function.

For example, you could create a function like this:

func validateAbsPath(path, name string) (string, error) {
	if !filepath.IsAbs(path) {
		return "", fmt.Errorf(
			"%s path must be absolute.\n\n"+
				"See 'docker model package --help' for more information",
			name,
		)
	}
	return filepath.Clean(path), nil
}

This function could then be used for mmprojPath, ggufPath, and licensePaths, making the validation logic more concise and easier to maintain.

@ilopezluna ilopezluna merged commit 9eaff19 into main Dec 18, 2025
16 of 17 checks passed
@ilopezluna ilopezluna deleted the projector-file branch December 18, 2025 09:42
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Unable to package VLM model with mmproj

3 participants