diff --git a/.gitignore b/.gitignore
index 9263a1e..15081af 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 _site
 .DS_Store
+vendor/
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index 22cdbe7..b7163aa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,35 +7,37 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
     colorator (1.1.0)
-    colored (1.2)
-    ethon (0.10.1)
+    colorize (0.8.1)
+    concurrent-ruby (1.0.5)
+    ethon (0.11.0)
       ffi (>= 1.3.0)
     execjs (2.7.0)
-    faraday (0.12.0.1)
+    faraday (0.15.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.18)
+    ffi (1.9.23)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
-    html-pipeline (2.5.0)
+    html-pipeline (2.8.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    html-proofer (3.6.0)
+    html-proofer (3.8.0)
       activesupport (>= 4.2, < 6.0)
       addressable (~> 2.3)
-      colored (~> 1.2)
+      colorize (~> 0.8)
       mercenary (~> 0.3.2)
-      nokogiri (~> 1.5)
+      nokogiri (~> 1.8.1)
       parallel (~> 1.3)
-      typhoeus (~> 0.7)
+      typhoeus (~> 1.3)
       yell (~> 2.0)
-    i18n (0.8.1)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jekyll (3.4.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
@@ -78,8 +80,8 @@ GEM
       jekyll (~> 3.3)
     jekyll-titles-from-headings (0.1.5)
       jekyll (~> 3.3)
-    jekyll-watch (1.5.0)
-      listen (~> 3.0, < 3.1)
+    jekyll-watch (1.5.1)
+      listen (~> 3.0)
     jemoji (0.8.0)
       activesupport (~> 4.0)
       gemoji (~> 3.0)
@@ -92,37 +94,41 @@ GEM
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9.7)
     mercenary (0.3.6)
-    mini_portile2 (2.1.0)
-    minitest (5.10.1)
+    mini_portile2 (2.3.0)
+    minitest (5.11.3)
     multipart-post (2.0.0)
-    nokogiri (1.7.1)
-      mini_portile2 (~> 2.1.0)
-    octokit (4.6.2)
+    nokogiri (1.8.2)
+      mini_portile2 (~> 2.3.0)
+    octokit (4.9.0)
       sawyer (~> 0.8.0, >= 0.5.3)
-    parallel (1.11.1)
-    pathutil (0.14.0)
+    parallel (1.12.1)
+    pathutil (0.16.1)
       forwardable-extended (~> 2.6)
-    public_suffix (2.0.5)
-    puma (3.8.2)
-    rack (1.6.5)
+    public_suffix (3.0.2)
+    puma (3.11.4)
+    rack (1.6.10)
     rack-jekyll (0.5.0)
       jekyll (>= 1.3)
       listen (>= 1.3)
       rack (~> 1.5)
-    rake (12.0.0)
-    rb-fsevent (0.9.8)
-    rb-inotify (0.9.8)
-      ffi (>= 0.5.0)
+    rake (12.3.1)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.9.10)
+      ffi (>= 0.5.0, < 2)
     rouge (1.11.1)
     safe_yaml (1.0.4)
-    sass (3.4.23)
+    sass (3.5.6)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
     sawyer (0.8.1)
       addressable (>= 2.3.5, < 2.6)
       faraday (~> 0.8, < 1.0)
     thread_safe (0.3.6)
-    typhoeus (0.8.0)
-      ethon (>= 0.8.0)
-    tzinfo (1.2.3)
+    typhoeus (1.3.0)
+      ethon (>= 0.9.0)
+    tzinfo (1.2.5)
       thread_safe (~> 0.1)
     yell (2.0.7)
 
@@ -158,4 +164,4 @@ DEPENDENCIES
   rouge (= 1.11.1)
 
 BUNDLED WITH
-   1.14.6
+   1.16.1
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..7d383b8
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,13 @@
+version: "3"
+services:
+  site:
+    command: jekyll serve
+    image: jekyll/jekyll:latest
+    volumes:
+      - ./:/srv/jekyll
+      - ./vendor/bundle:/usr/local/bundle
+    ports:
+      - 4000:4000
+      - 35729:35729
+      - 3000:3000
+      - 80:4000
\ No newline at end of file