Using vanilla alpine with wget

Added Dockerfile to image

Added FAQ to README

Improved README

New parameter to define authentication method

Using Alpine latest version due to some problems with ssl and Alpine Edge

Improved Readme. Rules folders are kept when building the container

Passing different arguments to create index depending on existing env vars

Using master version of ElastAlert

Entrypoint shouldn't fail when create-index fails

Elasticsearch host is mandatory

Added config file in this repository. More variables to customize how the container works

Passing AWS Region to authenticate the index creation request

Render rules with passed AWS information

Using elastalert version with support for boto profiles