Invalid Characters for DNS/Name

[sstarcher]

docker/docker-compose allows for uppercase characters for the name of the containers. metadata.name and spec.template.spec.containers[*].name have more restrictions.

The ReplicationController "AuditStuff" is invalid:
* metadata.name: invalid value 'AuditSecurityGroups': must be a DNS subdomain (at most 253 characters, matching regex [a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*): e.g. "example.com"
* spec.template.spec.containers[0].name: invalid value 'AuditSecurityGroups': must be a DNS label (at most 63 characters, matching regex [a-z0-9]([-a-z0-9]*[a-z0-9])?): e.g. "my-name"

Possibly lowercase and add -'s to uppercase letters