Fly: Failed to ping docker registry - docker

Question

I am trying to run a simple build by passing input task to the concourse. Here is my fly command,
fly -t tutorial e -c inputs_required.yml -i some-important-input=.
and my yml file,
---
platform: linux
image_resource:
type: docker-image
source: {repository: busybox}
inputs:
- name: some-important-input
run:
path: ls
args: ['-alR']
I am getting the below error message,
resource script '/opt/resource/check []' failed: exit status 1
stderr:
failed to ping registry: 2 error(s) occurred:
* ping https: Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
* ping http: Get http://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
errored
Please note that I am not behind a proxy. I am also not able to ping https://registry-1.docker.io/v2/.

Answer 1

The simple reason is your host cannot reach docker registry which is docker.io by default.
I am not familiar with fly. But I think the image source in your yaml file { repository:busybox} should be a specific image which could be used in command docker pull.
For addition, you may try a local image on your host first. Then try a remote image in some remote registry.