error downloading docker compose: GFW issue?

I'm using [this ](https://github.com/Azure/azure-quickstart-templates/blob/master/docker-neo4j/azuredeploy.json)quickstart template to deploy a Neo4j docker. I'm deploying to Azure China. I get this error, it was working before. Maybe Amazon is blocked by GFW?
````
"details": [
{
"code": "VMExtensionProvisioningError",
"message": "VM has reported a failure when processing extension 'DockerExtension'. Error message: \"Enable
Docker failed: ERROR: error installing docker-compose: error downloading docker-compose: Get https://github-cloud.s3.am
azonaws.com/releases/15045751/c3068b96-da48-11e5-9764-db8ee6ba3387?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AK
IAISTNZFOVBIJMK3TQ%2F20170411%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20170411T031955Z&X-Amz-Expires=300&X-Amz-Signa
ture=f9537631b0d145e21e6a6708cb57cfb4a8d404454f81ecec9ea704b8efed7fd9&X-Amz-SignedHeaders=host&actor_id=0&response-cont
ent-disposition=attachment%3B%20filename%3Ddocker-compose-Linux-x86_64&response-content-type=application%2Foctet-stream
: dial tcp 52.216.227.16:443: i/o timeout\"."
}
````

Start with docker-neo4j/azuredeploy.json and the DockerExtension provisioning error. Reproduce the deployment in Azure China and check whether the signed GitHub/S3 docker-compose URL times out. Done means determining whether this is a regional network block or a template/extension issue and documenting the actionable outcome.

Written by the indexing model from the issue text.