Version bump 4.1.0

* Tag images pushed to registry as repo:latest
* Raise if image cannot be pushed to registry

Version bump 4.0.0

* Add AWS ECR support
* Support docker-api v2
* Build on ruby 2.3.1
* Remove ruby 1.9

Version bump 3.4.1

Handle missing RepoTags

Patch Version Bump 3.0.5

Add startup script for RPM (fix broken startup script support)

Patch version bump

Shell out for git-archive - Fixes problem with long filenames

Patch version bump

Allow supporting higher versions of dockly-util before v1

Patch version bump 3.0.2

Patch version bump v3.0.1

* Specify the region when assuming a role

Major version bump 3.0.0

Patch version bump v2.7.2

* Use the basename of the imported image for tagging