Fix Docker module name in build-info

[yahavi]

• All tests passed. If this feature is not already covered by the tests, I added new tests.

---

Background
Currently, there are at least 2 ways to configure the Docker registry URL:

1. Using a reverse proxy or using the full path to the repository: acme-docker-local.jfrog.io.
2. Using URL to the Docker repository: acme.jfrog.io/docker-local

Expected
In the generated build-info, the module ID should be <image-name>/<image-tag>.

Actual
When configuring URL to Docker repository as a Docker registry, the module ID, in this case: docker-local/<image-name>/<image-tag>.

[gangefors]

This pull request broke the module id name for any image that contains more than one slash.

See #665