Uploads files to s3 bucket. Basically an [nginx](http://nginx.org/en/docs/) which `proxy_pass``HTTP POST` requests to [S3](https://aws.amazon.com/s3) directly
## Configuration
Environment variables are used to provide configuration.
| Variable name | Comment|
|----------------|---------|
| S3_BUCKET_NAME | Mandatory |
| AWS_ACCESS_KEY_ID | Optional - will be fetched from IAM policy on AWS |
| AWS_SECRET_ACCESS_KEY | Optional - will be fetched from IAM policy on AWS |