Oryx provides configuration options through environment variables so that you can apply minor adjustments and still utilize the automatic build process. The following variables are supported today:

NOTE: In Azure Web Apps, these variables are set as App Settings.

Setting name	Description	Default	Example
PRE_BUILD_COMMAND	Command to a shell script to be run before build	""	echo foo
PRE_BUILD_SCRIPT_PATH	A repo-relative path to a shell script to be run before build	""	scripts/prebuild.sh
POST_BUILD_COMMAND	Command to a shell script to be run after build	""	echo foo
POST_BUILD_SCRIPT_PATH	A repo-relative path to a shell script to be run after build	""	scripts/postbuild.sh
ENABLE_DYNAMIC_INSTALL	Enable dynamically install platform binaries if not presented inside the image	various	true, false
ORYX_SDK_STORAGE_BASE_URL	The storage base url from where oryx dynamically install sdks	"https://oryx-cdn.microsoft.io"
DYNAMIC_INSTALL_ROOT_DIR	Root directory path under which dynamically installed SDKs are created.	various	"/opt", "tmp/platforms/oryx"
DISABLE_CHECKERS	Disable running version checkers during the build.	false	true, false
ORYX_DISABLE_TELEMETRY	Disable Oryx command line tools from collecting any data.	false	true, false
ORYX_APP_TYPE	Type of application that the the source directory has.	""	'functions','static-sites', 'webapps'.
DISABLE_RECURSIVE_LOOKUP	Indicates if detectors should consider looking into sub-directories for files	false	true, false
ENABLE_MULTIPLATFORM_BUILD	Apply more than one toolset if repo indicates it	false	true, false
PLATFORM_NAME	Specify which platform the app is using. Possible values are: nodejs, hugo, python, dotnet, php, ruby, java.	""	"python"
PLATFORM_VERSION	Specify which platform version the app is using	""	"3.7.1"
REQUIRED_OS_PACKAGES	Indicate if it requires OS packages for Node or Python packages	false	true, false
CREATE_PACKAGE	Indicate if it should create packages for the app	false	true, false
CUSTOM_BUILD_COMMAND	Custom build command to run instead of the default build. Supported for Node.js, Python, PHP, and .NET.	""	See per-stack docs
SKIP_PLATFORM_DETECTION	Skip auto-detection of platforms. Only the platform specified via PLATFORM_NAME (or --platform) will be used. Requires PLATFORM_NAME to be set.	false	true, false

Setting name for .NET apps	Description	Default	Example
DOTNET_VERSION	Specify which .NET version the app is using	""	"5.0.100"
DOTNET_DEFAULT_VERSION	Specify which .NET version the app defaults to if none detected	""	"5.0.100"
DISABLE_DOTNETCORE_BUILD	Do not apply .NET Core build even if repo indicates it	false	true, false
PROJECT	repo-relative path to directory with .csproj file for build	""	"src/WebApp1/WebApp1.csproj"
MSBUILD_CONFIGURATION	Configuration (Debug or Release) that is used to build a .NET Core project	Release	Debug, Release

When CUSTOM_BUILD_COMMAND is set for .NET apps, it replaces the default dotnet restore and dotnet publish commands. The custom command must output to $DESTINATION_DIR (e.g., dotnet publish -o $DESTINATION_DIR).

Setting name for Nodejs apps	Description	Default	Example
NODE_VERSION	Specify which Node version the app is using	""	"14.15.0"
NODE_DEFAULT_VERSION	Specify which Node version the app defaults to if none detected	""	"14.15.0"
DISABLE_NODEJS_BUILD	Do not apply Node.js build even if repo indicates it	false	true, false
RUN_BUILD_COMMAND	Custom run build command to be run after package install commands	""	"npm run build"
ENABLE_NODE_MONOREPO_BUILD	Apply node monorepo build if repo indicates it	false	true, false
COMPRESS_DESTINATION_DIR	Indicates if the entire output directory needs to be compressed.	""	false
PRUNE_DEV_DEPENDENCIES	Only the prod dependencies are copied to the output for Node apps.	""	false
NPM_REGISTRY_URL	Specify the npm registry url.	""	"http://foobar.com/"
YARN_TIMEOUT_CONFIG	Specify the yarn timeout config with a delay in milliseconds.	""	"600000"

Setting name for Python apps	Description	Default	Example
PYTHON_VERSION	Specify which Python version the app is using	""	"2.7.1"
PYTHON_DEFAULT_VERSION	Specify which Python version the app defaults to if none detected	""	"2.7.1"
DISABLE_PYTHON_BUILD	Do not apply Python build even if repo indicates it	false	true, false
VIRTUALENV_NAME	Specify Python virtual environment name	""	"antenv2.7"
DISABLE_COLLECTSTATIC	Disable running collectstatic when building Django apps.	false	true, false
CUSTOM_REQUIREMENTSTXT_PATH	Specify where a requirements.txt is locating. If not set, default is at root of the repo.	""	"subdir/requirements.txt"
PYTHON_ENABLE_GUNICORN_MULTIWORKERS	Enable Gunicorn multi worker multi thread config.	false	true, false
PYTHON_GUNICORN_CUSTOM_WORKER_NUM	Only works when PYTHON\_ENABLE\_GUNICORN\_MULTIWORKERS is set to true. Specify Gunicorn multi worker number. If not set, default is (2 * CPU core num) + 1	(2 * CPU core num) + 1, 1	"2"
PYTHON_GUNICORN_CUSTOM_THREAD_NUM	Only works when PYTHON\_ENABLE\_GUNICORN\_MULTIWORKERS is set to true. Specify Gunicorn multi thread number. If not set, default is single thread.	""	"4"
ORYX_DISABLE_PIP_UPGRADE	Remove the --upgrade flag from the pip install command when targeting a specific package installation directory.	false	true, false
NGINX_CONF_FILE	Specify a customized configuration file to modify nginx.conf file	""	"newconfigfile.conf"

When CUSTOM_BUILD_COMMAND is set for Python apps, it replaces the default dependency installation (pip install, poetry install, uv sync) but preserves virtual environment setup

Setting name for Php apps	Description	Default	Example
PHP_VERSION	Specify which Php version the app is using	""	"7.4"
PHP_DEFAULT_VERSION	Specify which Php version the app defaults to if none detected	""	"7.4"
PHP_COMPOSER_VERSION	Specify which Php composer version the app is using	""	"7.2.15"
PHP__COMPOSER_DEFAULT_VERSION	Specify which Php composer version the app defaults to if none detected	""	"7.2.15"
DISABLE_PHP_BUILD	Do not apply Php build even if repo indicates it	false	true, false
FPM_MAX_CHILDREN	The maximum number of child processes to be created	5	"20"
FPM_START_SERVERS	The number of child processes created on startup	min_spare_servers + (max_spare_servers - min_spare_servers) / 2	"10"
FPM_MAX_SPARE_SERVERS	The desired maximum number of idle server processes	3	"15"
FPM_MIN_SPARE_SERVERS	The desired minimum number of idle server processes	1	"5"

When CUSTOM_BUILD_COMMAND is set for PHP apps, it replaces the default composer install command.

Setting name for Java apps	Description	Default	Example
JAVA_VERSION	Specify which Java version the app is using	""	"14.0.2"
JAVA_DEFAULT_VERSION	Specify which Java version the app defaults to if none detected	""	"14.0.2"
MAVEN_VERSION	Specify which Maven version the app is using	""	"3.6.3"
MAVEN_DEFAULT_VERSION	Specify which Maven version the app defaults to if none detected	""	"3.6.3"
DISABLE_JAVA__BUILD	Do not apply Java build even if repo indicates it	false	true, false

Setting name for Ruby apps	Description	Default	Example
RUBY_VERSION	Specify which Ruby version the app is using	""	"2.7.1"
RUBY_DEFAULT_VERSION	Specify which Ruby version the app defaults to if none detected	""	"2.7.1"
DISABLE_RUBY__BUILD	Do not apply Ruby build even if repo indicates it	false	true, false

Setting name for Hugo apps	Description	Default	Example
HUGO_VERSION	Specify which Hugo version the app is using	""	"0.76.3"
HUGO_DEFAULT_VERSION	Specify which Hugo version the app defaults to if none detected	""	"0.76.3"
DISABLE_HUGO_BUILD	Do not apply Hugo build even if repo indicates it	false	true, false

Setting name for Golang apps	Description	Default	Example
GOLANG_VERSION	Specify which Golang version the app is using	""	"0.76.3"
GOLANG_DEFAULT_VERSION	Specify which Golang version the app defaults to if none detected	""	"0.76.3"
DISABLE_GOLANG_BUILD	Do not apply Golang build even if repo indicates it	false	true, false

Oryx generated manifest file

oryx-manifest.toml is the orxy-generated manifest file involved in 2 stages (build & run). Full flow explanation by platforms. First the build stage will build the application and autogenerate oryx-manifest.toml. Secondly oryx-manifest.toml is used in the runtime to determine how to run the application. The following are fields supported today inside oryx-manifest.toml:

Node fields	Description	Example
NodeVersion	Platform's version that Oryx will use to run the app	"14.15.1"
OutputDirPath	Output is in separate volume due to rsync errors	".nuxt"
OperationId	Used to correlate with logs. Track telemetries whether build is passed or failed.	"|lTpVCq2KGuY=.e6f14074_"
SourceDirectoryInBuildContainer	Directory inside Docker container containing source code	"nodejs/helloworld-nuxtjs/"
PlatformName	Name of Oryx supported platform name	"nodejs"
CompressDestinationDir	Determines whether app is compressed to allow decompression for performance improvements	"false"
nodejs_npm_registry_url	URL of the npm registry	"https://foobar.com/"

Golang fields	Description	Example
GolangVersion	Platform's version that Oryx will use to run the app	"1.17"
OperationId	Used to correlate with logs. Track telemetries whether build is passed or failed.	"|lTpVCq2KGuY=.e6f14074_"
SourceDirectoryInBuildContainer	Directory inside Docker container containing source code	"golang/hello-world/"
PlatformName	Name of Oryx supported platform name	"golang"
CompressDestinationDir	Determines whether app is compressed to allow decompression for performance improvements	"false"

Python fields	Description	Example
PythonVersion	Platform's version that Oryx will use to run the app	"3.8.6"
virtualEnvName	Name of the virtual environment running in the Docker container	"pythonenv3.8"
OperationId	Used to correlate with logs. Track telemetries whether build is passed or failed.	"|lTpVCq2KGuY=.e6f14074_"
SourceDirectoryInBuildContainer	Directory inside Docker container containing source code	"nodejs/helloworld-nuxtjs/"
PlatformName	Name of Oryx supported platform name	"python"
CompressDestinationDir	Determines whether app is compressed to allow decompression for performance improvements	"false"
packagedir	Packages will be downloaded to given directory instead of VM. Optional field, must be set as ENV var or passed in as a property in oryx command.	"." (Example command: oryx build python-flask-sample-app/ --package --property packagedir=.)
packagewheel	Wheels are built with universal flag. packagedir parameter is required	"universal" (Example command: oryx build python-flask-sample-app/ --package --property packagedir=. --property packagewheel=universal)
compress_virtualenv	Determines if app is compressed. When running the app, virtual env must be extracted from this file. Default is false	"false"

Dotnet fields	Description	Example
DotNetCoreSdkVersion	Platform's version that Oryx will use to run the app	"3.1.406"
StartupDllFileName	Executable used to run the application	"NetCoreApp31.MvcApp.dll"
OperationId	Used to correlate with logs. Track telemetries whether build is passed or failed.	"|lTpVCq2KGuY=.e6f14074_"
SourceDirectoryInBuildContainer	Directory inside Docker container containing source code	"nodejs/helloworld-nuxtjs/"
PlatformName	Name of Oryx supported platform name	"dotnet"
CompressDestinationDir	Determines whether app is compressed to allow decompression, for performance improvements	"false"
OutputType	OutputType specified in .csproj	"Library"

Php fields	Description	Example
PhpVersion	Platform's version that Oryx will use to run the app	"8.0.3"
OperationId	Used to correlate with logs. Track telemetries whether build is passed or failed.	"|lTpVCq2KGuY=.e6f14074_"
SourceDirectoryInBuildContainer	Directory inside Docker container containing source code	"nodejs/helloworld-nuxtjs/"
PlatformName	Name of Oryx supported platform name	"php"
CompressDestinationDir	Determines whether app is compressed to allow decompression for performance improvements	"false"

Ruby fields	Description	Example
RubyVersion	Platform's version that Oryx will use to run the app	"2.7.2"
OperationId	Used to correlate with logs. Track telemetries whether build is passed or failed.	"|lTpVCq2KGuY=.e6f14074_"
SourceDirectoryInBuildContainer	Directory inside Docker container containing source code	"nodejs/helloworld-nuxtjs/"
PlatformName	Name of Oryx supported platform name	"ruby"
CompressDestinationDir	Determines whether app is compressed to allow decompression for performance improvements	"false"

Java fields	Description	Example
JavaVersion	Platform's version that Oryx will use to run the app	"11.0.8"
OperationId	Used to correlate with logs. Track telemetries whether build is passed or failed.	"|lTpVCq2KGuY=.e6f14074_"
SourceDirectoryInBuildContainer	Directory inside Docker container containing source code	"nodejs/helloworld-nuxtjs/"
PlatformName	Name of Oryx supported platform name	"java"
CompressDestinationDir	Determines whether app is compressed to allow decompression for performance improvements	"false"

Hugo fields	Description	Example
HugoVersion	Platform's version that Oryx will use to run the app	"0.81.0"
OperationId	Used to correlate with logs. Track telemetries whether build is passed or failed.	"|lTpVCq2KGuY=.e6f14074_"
SourceDirectoryInBuildContainer	Directory inside Docker container containing source code	"nodejs/helloworld-nuxtjs/"
PlatformName	Name of Oryx supported platform name	"hugo"
CompressDestinationDir	Determines whether app is compressed to allow decompression for performance improvements	"false"