search-engine: Add Docker Hub image search engine. (syl20bnr#15706)

CHANGELOG.develop

@@ -342,6 +342,7 @@ In org-agenda-mode
   - Add Debian & Ubuntu package search engines (thanks to Alfonso Montero).
   - Allow to configure a TLD other than =.com= for Amazon searches (thanks to Alfonso Montero).
   - Add Rails API search engine
+  - Add Docker Hub image search engine (thanks to Alfonso Montero).
 ***** Spacemacs-navigation
 - Key bindings:
   - Add ~J/K~ to scroll up/down (or next/previous node) in Info-mode

layers/+web-services/search-engine/README.org

@@ -23,9 +23,9 @@ This layer adds support for the [[https://github.com/hrs/engine-mode][Search Eng
 - Bing
 - Duck Duck Go
 - Ecosia
+- GitHub
 - Google
 - Google Images
-- GitHub
 - Google Maps
 - Twitter
 - Project Gutenberg
@@ -47,6 +47,7 @@ This layer adds support for the [[https://github.com/hrs/engine-mode][Search Eng
 - Debian Packages
 - Ubuntu Packages
 - Rails API
+- Docker Hub images
 
 * Install
 To use this configuration layer, add it to your =~/.spacemacs=. You will need to

layers/+web-services/search-engine/packages.el

@@ -44,6 +44,9 @@
               (bing
                :name "Bing"
                :url "https://www.bing.com/search?q=%s")
+              (docker-hub
+               :name "Docker Hub"
+               :url "https://hub.docker.com/search?q=%s")
               (duck-duck-go
                :name "Duck Duck Go"
                :url "https://duckduckgo.com/?q=%s")