Specify Default Launch Process

+++ title="Specify the default launch process" weight=99 summary="Buildpacks can define multiple processes for an application image. Specify which process should be the default." +++

While buildpacks usually define the default process type for an application, end users may specify the desired default process.

To specify the default process:

• You first need to know what named process types might be contributed by the buildpacks in your build; for more information, see docs for running the application
• Append the following flag to the pack build command:

pack build --default-process <process name> <image name>` # <process name> must be a valid process name