[devdocsgjs/main: 1043/1867] doc.fetch: read GITHUB_TOKEN also from ENV

[Andy Holmes <andyholmes src gnome org>]

commit c25fbb4b3c8d61802fca38e175373ce26b491b09
Author: Simon Legner <Simon Legner gmail com>
Date:   Fri Feb 7 20:23:56 2020 +0100

    doc.fetch: read GITHUB_TOKEN also from ENV

 lib/docs/core/doc.rb | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/lib/docs/core/doc.rb b/lib/docs/core/doc.rb
index a5268300..94611208 100644
--- a/lib/docs/core/doc.rb
+++ b/lib/docs/core/doc.rb
@@ -220,6 +220,8 @@ module Docs
 
       if opts.key?(:github_token) and url.start_with?('https://api.github.com/')
         headers['Authorization'] = "token #{opts[:github_token]}"
+      elsif ENV['GITHUB_TOKEN'] and url.start_with?('https://api.github.com/')
+        headers['Authorization'] = "token #{ENV['GITHUB_TOKEN']}"
       end
 
       opts[:logger].debug("Fetching #{url}")