Dockerhub images

[TanyaStere42]

WildMeOrg/Wildbook#800
In the developer docs, we need to write up what images will be there and what they are for. This should include:

• setting up a production environment (tagged version)
• setting up developer environment (pull from main)
• setting up dev environment for a hotfix (tagged version, and how to increment to the next version)

[vkirkl]

@vkirkl to review all wildbook (& scout) dockerhub stuff.