diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..26df175
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,4 @@
+.git
+.gitignore
+Dockerfile
+README.md
diff --git a/Dockerfile b/Dockerfile
index 305b894..c3940c8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,19 +1,36 @@
-FROM alpine:3.3
+FROM alpine:edge
 
 WORKDIR /usr/src/app
-COPY composer.json /usr/src/app/
-COPY composer.lock /usr/src/app/
 
-RUN apk --update add git php-common php-ctype php-iconv php-json php-phar php-pcntl php-openssl php-sockets curl && \
-    curl -sS https://getcomposer.org/installer | php && \
-    /usr/src/app/composer.phar install && \
-    apk del build-base && rm -fr /usr/share/ri
-
-RUN /usr/src/app/vendor/bin/phpcs --config-set installed_paths "/usr/src/app/vendor/drupal/coder/coder_sniffer,/usr/src/app/vendor/wp-coding-standards/wpcs,/usr/src/app/vendor/yiisoft/yii2-coding-standards"
+RUN apk --update add \
+      php7-common \
+      php7-ctype \
+      php7-iconv \
+      php7-json \
+      php7-mbstring \
+      php7-openssl \
+      php7-pcntl \
+      php7-phar \
+      php7-sockets \
+      curl && \
+    rm /var/cache/apk/* && \
+    ln -s /usr/bin/php7 /usr/bin/php
 
 RUN adduser -u 9000 -D app
-USER app
 
 COPY . /usr/src/app
+RUN chown -R app:app /usr/src/app
+
+USER app
+
+RUN curl -sS https://getcomposer.org/installer | php && \
+    ./composer.phar install && \
+    rm /usr/src/app/composer.phar
+
+RUN /usr/src/app/vendor/bin/phpcs --config-set \
+    installed_paths \
+    "/usr/src/app/vendor/drupal/coder/coder_sniffer,/usr/src/app/vendor/wp-coding-standards/wpcs,/usr/src/app/vendor/yiisoft/yii2-coding-standards"
+
+VOLUME /code
 
 CMD ["/usr/src/app/bin/codeclimate-phpcodesniffer"]
diff --git a/composer.lock b/composer.lock
index d6d27c6..ad4434a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -101,22 +101,22 @@
         },
         {
             "name": "drupal/coder",
-            "version": "8.2.9",
+            "version": "8.2.10",
             "source": {
                 "type": "git",
                 "url": "https://github.com/klausi/coder.git",
-                "reference": "b08682bd939cf7d3ac7034bee792aa17f80e19d7"
+                "reference": "c835ff5c1733676fe0d3f3b861e814d570baaa6f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/klausi/coder/zipball/b08682bd939cf7d3ac7034bee792aa17f80e19d7",
-                "reference": "b08682bd939cf7d3ac7034bee792aa17f80e19d7",
+                "url": "https://api.github.com/repos/klausi/coder/zipball/c835ff5c1733676fe0d3f3b861e814d570baaa6f",
+                "reference": "c835ff5c1733676fe0d3f3b861e814d570baaa6f",
                 "shasum": ""
             },
             "require": {
                 "ext-mbstring": "*",
                 "php": ">=5.4.0",
-                "squizlabs/php_codesniffer": ">=2.7.0",
+                "squizlabs/php_codesniffer": ">=2.7.0 <3.0",
                 "symfony/yaml": ">=2.0.0"
             },
             "require-dev": {
@@ -134,20 +134,20 @@
                 "phpcs",
                 "standards"
             ],
-            "time": "2016-09-17 16:49:15"
+            "time": "2016-12-09 21:57:53"
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "2.7.0",
+            "version": "2.7.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/squizlabs/PHP_CodeSniffer.git",
-                "reference": "571e27b6348e5b3a637b2abc82ac0d01e6d7bbed"
+                "reference": "9b324f3a1132459a7274a0ace2e1b766ba80930f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/571e27b6348e5b3a637b2abc82ac0d01e6d7bbed",
-                "reference": "571e27b6348e5b3a637b2abc82ac0d01e6d7bbed",
+                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/9b324f3a1132459a7274a0ace2e1b766ba80930f",
+                "reference": "9b324f3a1132459a7274a0ace2e1b766ba80930f",
                 "shasum": ""
             },
             "require": {
@@ -212,20 +212,20 @@
                 "phpcs",
                 "standards"
             ],
-            "time": "2016-09-01 23:53:02"
+            "time": "2016-11-30 04:02:31"
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.2.0",
+            "version": "v1.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "dff51f72b0706335131b00a7f49606168c582594"
+                "reference": "e79d363049d1c2128f133a2667e4f4190904f7f4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/dff51f72b0706335131b00a7f49606168c582594",
-                "reference": "dff51f72b0706335131b00a7f49606168c582594",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/e79d363049d1c2128f133a2667e4f4190904f7f4",
+                "reference": "e79d363049d1c2128f133a2667e4f4190904f7f4",
                 "shasum": ""
             },
             "require": {
@@ -237,7 +237,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.2-dev"
+                    "dev-master": "1.3-dev"
                 }
             },
             "autoload": {
@@ -271,29 +271,35 @@
                 "portable",
                 "shim"
             ],
-            "time": "2016-05-18 14:26:46"
+            "time": "2016-11-14 01:06:16"
         },
         {
             "name": "symfony/yaml",
-            "version": "v3.1.5",
+            "version": "v3.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "368b9738d4033c8b93454cb0dbd45d305135a6d3"
+                "reference": "a7095af4b97a0955f85c8989106c249fa649011f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/368b9738d4033c8b93454cb0dbd45d305135a6d3",
-                "reference": "368b9738d4033c8b93454cb0dbd45d305135a6d3",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/a7095af4b97a0955f85c8989106c249fa649011f",
+                "reference": "a7095af4b97a0955f85c8989106c249fa649011f",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.5.9"
             },
+            "require-dev": {
+                "symfony/console": "~2.8|~3.0"
+            },
+            "suggest": {
+                "symfony/console": "For validating YAML files using the lint command"
+            },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.1-dev"
+                    "dev-master": "3.2-dev"
                 }
             },
             "autoload": {
@@ -320,7 +326,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2016-09-25 08:27:07"
+            "time": "2016-12-10 10:07:06"
         },
         {
             "name": "wp-coding-standards/wpcs",