Setting sample config for container development

README.md

@@ -70,6 +70,33 @@ in your browser to access the preview.
 
 **Note:** The build of the site will take several minutes.
 
+### Preview with Docker
+
+Run the following
+
+``` sh
+docker run -it --name ruby-lang -v $PWD:/www.ruby-lang.org -w /www.ruby-lang.org --network host ruby:2.6.3 sh -c "bundle install --without production && bundle exec rake serve"
+```
+
+to generate the website and start a local web server
+
+
+Open <http://localhost:9292/> in your browser to access the preview.
+
+### Preview with Docker Compose
+
+Run the following
+
+``` sh
+docker-compose up
+```
+
+to generate the website and start a local web server
+
+
+Open [http://localhost:9292/](http://localhost:9292/)
+in your browser to access the preview.
+
 ### Preview on Heroku
 
 In case a build is not possible on your local machine

docker-compose.yml

@@ -0,0 +1,20 @@
+version: '3.5'
+services:
+  web:
+    container_name: ruby-lang
+    image: ruby:2.6.3
+    command: >
+      sh -c "bundle check || bundle install --without production &&
+             bundle exec rake build &&
+             bundle exec rake serve"
+    volumes:
+      - .:/www.ruby-lang.org
+      - bundle_cache:/usr/local/bundle
+    working_dir: /www.ruby-lang.org
+    ports:
+      - 9292:9292
+    network_mode: host
+
+volumes:
+  bundle_cache:
+    name: ruby-lang-bundle