Revert "Multi-stage Dockerfile with config volume."
Revert "Multi-stage Dockerfile with config volume."

This reverts commit c5b8995989916c6d06ffec1eae854ef9814d40f4.

snagles/docker-registry-manager,stefannaglee/docker-registry-manager,stefannaglee/docker-registry-manager,snagles/docker-registry-manager,snagles/docker-registry-manager,stefannaglee/docker-registry-manager