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Add support for custom build commands#2922

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user/sartsharma/custom-build-command
Open

Add support for custom build commands#2922
sarsharma wants to merge 3 commits into
mainfrom
user/sartsharma/custom-build-command

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@sarsharma sarsharma commented May 11, 2026

This pull request introduces support for specifying a custom build command(via CUSTOM_BUILD_COMMAND env var) in the generated build scripts for .NET Core, Python, and PHP platforms. This support already exists for nodejs platform. When a custom build command is provided, it overrides the default build steps (like dotnet publish, composer install, or pip install) in the generated scripts. The implementation includes new configuration options, updates to script templates, and ensures the build process and file copying logic adapt accordingly.
These changes make the build process more flexible and customizable for advanced scenarios.

Also introduced a new configuration key SKIP_PLATFORM_DETECTION and ensured the CLI correctly merges this setting from multiple sources. Follow up from #2918 to add parity to allow skip detection via env variable/cli flag.

Testing

Deployed test apps for all platforms - nodejs, python, php, dotnet and set a CUSTOM_BUILD_COMMAND for each scenario and checked if the custom build command was used instead of oryx generated build commands. To verify this, the custom build command also writes a custom txt file which is served from / for each app

  • Nodejs
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  • Python
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  • Dotnet
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  • Php

@sarsharma sarsharma requested a review from a team as a code owner May 11, 2026 07:31
@sarsharma sarsharma changed the title Add support for custom build command Add support for custom build commands May 11, 2026
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