Janssen

I'm new to Phlex and am submitting this PR to a gotcha that got me. The docs explain that you can render a component by calling `call` on it. Because...

kamal app exec includes secrets

5

Currently, containers created by `kamal app exec` don't have secrets. It would be helpful if they did have secrets, as env vars, like Kamal's other containers. This PR does that....

# Motivation It's easy to misconfigure Kamal secrets, secret helpers, and environment variables. This is especially true for i) users who are new to Kamal, ii) users who [may not...