docs: Add basic docs for AWS support

Signed-off-by: Dave Tucker <dt@docker.com>

docs/aws.md

@@ -0,0 +1,44 @@
+# Using LinuxKit on Amazon Web Services (AWS)
+
+This is a quick guide to run LinuxKit on AWS. 
+
+## Setup
+
+Before you proceed it's recommended that you set up the [AWS CLI](https://aws.amazon.com/cli/)
+and perform an `aws configure`
+
+If you do not wish to install these tools you should ensure that you set the AWS [environment variables](http://docs.aws.amazon.com/cli/latest/userguide/cli-environment.html)
+
+You will need to create an Amazon S3 Storage Bucket for your LinuxKit images and create a VM Import Service Role.
+Instructions on how to do this can be found [here](http://docs.aws.amazon.com/vm-import/latest/userguide/vmimport-image-import.html#w2ab1c10c15b7).
+
+Finally, you must set the `AWS_REGION` environment variable as this is used by the AWS Go SDK.
+```
+export AWS_REGION=eu-west-1
+```
+
+## Build an image
+
+AWS requires a `RAW` image. To create one:
+
+```
+$ moby build -output img examples/aws.yml
+```
+
+## Push image
+
+Do `linuxkit push aws -bucket bucketname aws.img` to upload it to the
+specified bucket, and create a bootable image from the stored image.
+
+Alternatively, you can use the `AWS_BUCKET` environment variable to specify the bucket name.
+
+## Create an instance and connect to it
+
+With the image created, we can now create an instance.
+You won't be able to see the serial console output until after it has terminated.
+
+```
+linuxkit run aws aws
+```
+
+You can edit the AWS example to allow you to SSH to your instance in order to use it.

src/cmd/linuxkit/push_aws.go

@@ -7,6 +7,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"strings"
 	"time"
 
 	log "github.com/Sirupsen/logrus"