When testing PR18 then launch the bot with controller but without selected available image it uses dardonacci/hummingbot:latest instead of hummingbot/hummingbot:latest

Recording here: https://www.loom.com/share/4bdd19ce15724943845641386d7d5134

Steps to reproduce:

1. Setup deploy on source ( dashboard + backend-api + hummingbot-broker )
2. On dashboard page, create config then deploy without selecting any images
3. Go to terminal and run docker ps or docker images to check the container and image used