[BUG] Unable to set storage type via env var

[Lee Briggs]

Describe the bug

According to the docs, it should be possible to set the config options via env vars, particularly ZEP_STORE_TYPE. However, if the config file isn't present, Zep fails to start with:

time="2023-12-26T17:49:22Z" level=fatal msg="store.type must be set"

To Reproduce
Remove the storage key from config.yaml.

Set ZEP_STORE_TYPE as an env var to postgres

Expected behavior
I should be able to set ZEP_STORAGE_TYPE as a config option

Logs

zep           | time="2023-12-26T17:50:11Z" level=info msg="Starting Zep server version 0.21.0-9161f29 (2023-12-14T18:48:27+0000)"
zep           | time="2023-12-26T17:50:11Z" level=info msg="Log level set to: info"
zep           | time="2023-12-26T17:50:11Z" level=fatal msg="store.type must be set"

Environment (please complete the following information):

• Zep version: [e.g. vX.X.X]
• Zep SDK and version: [e.g. zep-js or zep-python and vX.X.X]
• Deployment [e.g. using docker compose, to a hosted environment such as Render]

Note: The Zep server version is available in the Zep server logs at startup:
Starting zep server version 0.11.0-cbf4fe4 (2023-08-30T12:49:03+0000)

Additional context
Add any other context about the problem here.

[Daniel Chalef]

Cloud deployments require deploying the zep-cloud container.