Fix container version mismatch by moving build type ARG after FROM

[yankay]

Summary

From the log https://github.com/vllm-project/guidellm/actions/runs/18408284407/job/52453702204#step:5:468 , it can be seen that GUIDELLM_BUILD_TYPE=$GUIDELLM_BUILD_TYPE in the container file was not correctly assigned. The reason is that the ARG instructions defined before FROM are global but not available in the build stage context, which can lead to improper version tagging during the build process. This caused the container to use an incorrect version string. Ref to https://docs.docker.com/reference/dockerfile#understand-how-arg-and-from-interact

Details

Moved the ARG GUIDELLM_BUILD_TYPE=dev instruction and its explanatory comments after the FROM $BASE_IMAGE as builder statement. This ensures the build type argument is properly scoped to the build stage.

Test Plan

• In this branch, create a tag such as v0.3.2 and build using buildah build --build-arg GUIDELLM_BUILD_TYPE=release, then check if the logs return the correct version.

Related Issues

• Resolves v0.3.1 container includes v0.4.0.dev0 GuideLLM python package #453

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Use of AI

• Includes AI-assisted code completion
• Includes code generated by an AI application
• Includes AI-generated tests (NOTE: AI written tests should have a docstring that includes ## WRITTEN BY AI ##)

[sjmonson]

Awesome!