Optional arguments to enable specific features of builds.
Requested verifiability options.
Requested disk size for the VM that runs the build. Note that
this is NOT "disk free"; some of the space will be used by
the operating system and build utilities. Also note that this
is the minimum disk size that will be allocated for the build
-- the build may run with a larger disk than requested. At
present, the maximum disk size is 1000GB; builds that request
more than the maximum are rejected with an error.
Option to define build log streaming behavior to Google Cloud
Storage.
Option to specify the logging mode, which determines where the
logs are stored.
A list of global environment variables, which are encrypted
using a Cloud Key Management Service crypto key. These values
must be specified in the build's Secret. These variables
will be available to all build steps in this build.
