Before trying bundle, let me share other findings, as they make me doubt that bundle is the way to go.
First, the error says that Python is not loaded.
And I found in the documentation - that to enable python middleware, i have to start another service, which is tyk-gateway-python instead of tyk-gateway
But when I tried this from the container, obviously, it failed because port 8080 is already busy.
So my question is:
what service or what prerequisites shall I run/install to prepare the runtime to execute python?
Because the bundle is just a way of getting the code to execute, while the problem above - runtime setup which is not documented well