default to ci.concourse-ci.org for Fly download

Author: patrickcrocker

src/fly-cli/devcontainer-feature.json

@@ -6,7 +6,12 @@
     "options": {
         "url": {
             "type": "string",
-            "description": "Concourse URL to download the Fly CLI from"
+            "default": "https://ci.concourse-ci.org",
+            "description": "Concourse URL to download the Fly CLI from",
+            "proposals": [
+                "",
+                "https://ci.concourse-ci.org"
+            ]
         }
     },
     "installsAfter": [

src/fly-cli/install.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-: ${URL:=https://ci.nulldriver.com}
+: ${URL:=https://ci.concourse-ci.org}
 
 USERNAME=${USERNAME:-${_REMOTE_USER:-"automatic"}}