Fix capabilities on docker API >1.40

[eric-higgins-ai]

The Capabilities field is only used with Docker API <1.40, so with newer Docker versions it's not possible to set the container capabilities. This fixes the issue by also using the newer CapAdd field.

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[gemini-code-assist]

Summary of Changes

Hello @eric-higgins-ai, 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 addresses an issue where Docker container capabilities were not being correctly applied when interacting with Docker API versions 1.40 and above. By introducing the CapAdd field alongside the existing Capabilities field in the HostConfig structure, this change ensures that container capabilities are consistently recognized and applied across a broader range of Docker API versions, improving the reliability of container configurations.

Highlights

• Docker API Compatibility: Ensures container capabilities are correctly applied for Docker API versions greater than 1.40 by utilizing the CapAdd field in HostConfig.

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[gemini-code-assist]

Code Review

The pull request modifies the hostConfig method in pkg/drivers/docker_driver.go by adding CapAdd: d.runOpts.Capabilities to the docker.HostConfig struct initialization in two different conditional blocks. This change introduces a CapAdd field assignment that mirrors the existing Capabilities field assignment, both using d.runOpts.Capabilities.