When using a Custom strategy, all the defined input secrets and ConfigMaps
are available inside the builder container in the /var/run/secrets/openshift.io/build
directory. The custom build image is responsible for using these secrets
and ConfigMaps appropriately. The Custom strategy also allows secrets to be
defined as described in Custom Strategy Options.
There is no technical difference between existing strategy secrets and the input secrets. However, your builder image might distinguish between them and use them differently, based on your build use case.
The input secrets are always mounted into the
/var/run/secrets/openshift.io/build directory or your builder can parse the
$BUILD environment variable, which includes the full build object.