building docker images

Required build args per label schema:

• BUILD_DATE=date -u +"%Y-%m-%dT%H:%M:%SZ"
• VCS_REF=git rev-parse --short HEAD
• VERSION=1.x.xxx

--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` --build-arg VCS_REF=`git rev-parse --short HEAD` --build-arg VERSION=1.1.01