Alpine 3.7

• Update to alpine version 3.7
• Update dockerize version 0.6.0

Alpine 3.6

• Updated base image to alpine 3.6
• Updated dockerize version to 0.5.0

Alpine 3.5

Refactored Alpine 3.5 Base Image

• Added script and feature for creating docker container users: README
• Added script and feature for creating container startup sequences: README
• Added tini by default: README
• Added su-exec by default: README