Enhance Docker build process with error handling and improve ISO build checks

[Githubguy132010]

This pull request includes several improvements to the build process in the .github/workflows/build.yml file. The changes focus on enhancing error handling, ensuring directory creation, and improving the reliability of the build and release notes generation.

Enhancements to error handling and reliability:

• Added error handling for Docker image build, ISO build, and package tracking script execution to ensure proper error messages are logged and the workflow exits gracefully if any step fails. [1] [2]
• Ensured the package cache directory and package tracking output directory are created before use to prevent potential errors. [1] [2]
• Added verification for the existence of the ISO file and the release notes file, with appropriate fallback content creation if they are missing or empty. [1] [2]

These changes aim to make the build process more robust and provide clearer feedback in case of failures.

[Copilot]

Copilot reviewed 1 out of 1 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

.github/workflows/build.yml:96

• The use of 'shell' after the image name is unusual; if the container is meant to execute a bash script, consider using 'bash -c' for consistency or confirm that the image's entrypoint supports the 'shell' command.

arch-iso-builder shell "cd ${{ env.WORKSPACE }} && ./scripts/package_tracking/track_package_updates.sh" || {