Add build config for jekyll + netlify

https://www.netlify.com/blog/2017/05/11/migrating-your-jekyll-site-to-netlify/

Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>

.gitignore

@@ -2,3 +2,4 @@
 coverage.txt
 profile.out
 containerd.test
+_site/

Gemfile

@@ -0,0 +1,4 @@
+source "https://rubygems.org"
+gem "jekyll"
+gem "jekyll-redirect-from"
+gem "jekyll-seo-tag"

Gemfile.lock

@@ -0,0 +1,69 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.0.5)
+    em-websocket (0.5.1)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.5)
+    ffi (1.9.18)
+    forwardable-extended (2.6.0)
+    http_parser.rb (0.6.0)
+    i18n (0.9.1)
+      concurrent-ruby (~> 1.0)
+    jekyll (3.7.0)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 0.7)
+      jekyll-sass-converter (~> 1.0)
+      jekyll-watch (~> 2.0)
+      kramdown (~> 1.14)
+      liquid (~> 4.0)
+      mercenary (~> 0.3.3)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 4)
+      safe_yaml (~> 1.0)
+    jekyll-redirect-from (0.13.0)
+      jekyll (~> 3.3)
+    jekyll-sass-converter (1.5.1)
+      sass (~> 3.4)
+    jekyll-seo-tag (2.4.0)
+      jekyll (~> 3.3)
+    jekyll-watch (2.0.0)
+      listen (~> 3.0)
+    kramdown (1.16.2)
+    liquid (4.0.0)
+    listen (3.1.5)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+      ruby_dep (~> 1.2)
+    mercenary (0.3.6)
+    pathutil (0.16.1)
+      forwardable-extended (~> 2.6)
+    public_suffix (3.0.1)
+    rb-fsevent (0.10.2)
+    rb-inotify (0.9.10)
+      ffi (>= 0.5.0, < 2)
+    rouge (3.1.0)
+    ruby_dep (1.5.0)
+    safe_yaml (1.0.4)
+    sass (3.5.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  jekyll
+  jekyll-redirect-from
+  jekyll-seo-tag
+
+BUNDLED WITH
+   1.16.1

docs/_config.yml

@@ -10,7 +10,7 @@ safe: false
 lsi: false
 exclude: [README.md]
 
-gems:
+plugins::
   - jekyll-redirect-from
   - jekyll-seo-tag
 

docs/_includes/links.html

@@ -1,3 +1,3 @@
       <div class="link">
-        <a href="https://github.com/containerd/containerd"><img src="/images/containerd-light-d.png"/></a>
+        <a href="https://github.com/containerd/containerd"><img src="images/containerd-light-d.png"/></a>
       </div>