Add container build jobs to all build workflows

[sjmonson]

Add container build jobs alongside the existing wheel jobs. Tag containers based on which workflow was triggered.

Tags:

• PR: pr-{{ github.event.number }} {{ github.sha }}
• Nightly: nightly {{ github.sha }}
• Release candidate: latest {{ github.sha }}
• Release: latest stable {{ github.sha }}

Edit: To save space, don't use unique tags.

---

Future Improvements (Follow up PR)

• Tag RC and releases with their versions. (e.g. 0.3.0-rc, 0.3.0)
• Reuse wheel builds in container

[nm-red-hat-upstream-automation-bot]

📦 Build Artifacts Available
The build artifacts (.whl and .tar.gz) have been successfully generated and are available for download: https://github.com/neuralmagic/guidellm/actions/runs/15717009161/artifacts/3348790000.
They will be retained for up to 30 days.

[nm-red-hat-upstream-automation-bot]

📦 Build Artifacts Available
The build artifacts (.whl and .tar.gz) have been successfully generated and are available for download: https://github.com/neuralmagic/guidellm/actions/runs/15717125485/artifacts/3348834899.
They will be retained for up to 30 days.

[nm-red-hat-upstream-automation-bot]

📦 Build Artifacts Available
The build artifacts (.whl and .tar.gz) have been successfully generated and are available for download: https://github.com/neuralmagic/guidellm/actions/runs/15717342057/artifacts/3348916151.
They will be retained for up to 30 days.

[nm-red-hat-upstream-automation-bot]

📦 Build Artifacts Available
The build artifacts (.whl and .tar.gz) have been successfully generated and are available for download: https://github.com/neuralmagic/guidellm/actions/runs/15786504984/artifacts/3372647289.
They will be retained for up to 30 days.

[nm-red-hat-upstream-automation-bot]

📦 Build Artifacts Available
The build artifacts (.whl and .tar.gz) have been successfully generated and are available for download: https://github.com/neuralmagic/guidellm/actions/runs/15786624113/artifacts/3372696623.
They will be retained for up to 30 days.

[Copilot]

Pull Request Overview

This PR adds container build jobs to the existing build workflows, enabling container image builds and pushes alongside the wheel builds.

• Added a new job "build-and-push-container" in the release, release-candidate, nightly, and development workflows.
• Configured different container image tag strategies based on the workflow context.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
.github/workflows/release.yml	Introduces container build and push job with tags "latest stable".
.github/workflows/release-candidate.yml	Adds container build step with tag "latest".
.github/workflows/nightly.yml	Implements a container job with the "nightly" tag.
.github/workflows/development.yml	Creates a container build job using a PR-based tag.

[nm-red-hat-upstream-automation-bot]

📦 Build Artifacts Available
The build artifacts (.whl and .tar.gz) have been successfully generated and are available for download: https://github.com/neuralmagic/guidellm/actions/runs/15935649149/artifacts/3422329368.
They will be retained for up to 30 days.

[nm-red-hat-upstream-automation-bot]

📦 Build Artifacts Available
The build artifacts (.whl and .tar.gz) have been successfully generated and are available for download: https://github.com/neuralmagic/guidellm/actions/runs/15935744694/artifacts/3422360640.
They will be retained for up to 30 days.