Please delete this issue if this is not the proper place to ask. Anyway;
I've got temporary files on disk which I need to encrypt and pass on to http client (that reads IO/streams).

Not sure how to do this right, Pass file and StringIO (as a target) to SymmetricEncryption::Writer.encrypt and then construct new StringIO object from the result?

Create a document in "/Documentation/Markdown/Reference Articles" called FlingOS-Compile-Time-Configuration and include notes on how to configure the default keyboard layout using definitions in the Kernel.Hardware project properties (and not to check-in/commit such a change).

Currently, deploy-app.sh includes a section that configures Istio to use Istio supplied certificates:

https://github.com/GoogleCloudPlatform/pci-gke-blueprint/blob/a9ad9cfd937e60bb8b6fdb5150d86b99e2eb8651/_helpers/deploy-app.sh#L44-L48

It would be helpful to add steps that facilitate creating and using self-generated certificates.

Add hints. tips for troubleshooting possible Data Connector issues that could be faced during the workshop.

i.e. what to do if a scan fails?