Official Docker container on Docker Hub

### Expected Behavior

Having an official, properly versioned, up-to-date Docker image.

### Actual Behavior

There are only [some inoffical outdated images](https://hub.docker.com/search?q=sqlcipher&type=image).

### Steps to Reproduce

Go to [`hub.docker.com` and search around](https://hub.docker.com/search?q=sqlcipher&type=image).

SQLCipher version: all of them