Update Container README files

[CSpicer-BAH]

Issue

Some container projects don't provide useful information for users in their README files, such as environment variables needed. This has led to confusion for users on how a container is intended to function or to be deployed, among others.

Definition of Done

Containers have been reviewed and have updated their README files where appropriate.

Acceptance Criteria

• A standard template has been applied to container READMEs
• Notes for deploying and testing locally have been documented
• Special container requirements have been documented