Coreos install stop on "Fetching user-data from datasource"

Question

I try to install coreos on hyper-v on windows server 2008 r2. I set up virtual machine, give it an coreos.iso, then wget my cloud-config.yaml Then I try to sudo coreos-install -d /dev/sda -c cloud-config.yaml and it says

Checking availability of "local-file"
Fetching user-data from datasource of type "local-file"

And... that's all, it does no more

Here's my cloud-config.yaml

#cloud-config

hostname: dockerhost

coreos:
  units:
    - name: etcd.service
      command: start
    - name: fleet.service
      command: start

users:
  - name: core
    ssh-authorized-keys: 
      - ssh-rsa somesshkey

  - groups:
      - sudo
      - docker

FIY i'm using this tutorial

Answer 1

Figure it out It was our proxy server, which I find out when I use an excellent command bash -x which gave me the full output

Command was proposed by @BrianReadbeard