[ricardbejarano]

You may find my NGINX image[1] interesting.

There's some features you could easily add to yours in order to make it a better overall image.

[1] https://github.com/ricardbejarano/nginx

[darkwater]

The ARG approach to everything is really good IMO, it let you customize the final image without having to change the Dockerfile. For example, in the OP Dockerfile, the GPG key at very least should go in an ARG.

[ranadeep]

I will take a look at it. Thanks for the feedback.