Ease development using docker-compose

Dockerfile

@@ -0,0 +1,27 @@
+# Copyright (C) 2019 Sebastian Pipping <sebastian@pipping.org>
+# Licensed under the MIT license
+
+FROM ruby:stretch
+
+ENV LC_ALL=C.UTF-8
+ENV LANG=en_US.UTF-8
+ENV LANGUAGE=en_US.UTF-8
+
+COPY \
+        css/ \
+        js/ \
+        lang/ \
+        _layouts/ \
+        script/ \
+        spec/ \
+    \
+        _config_local.yml \
+        _config.yml \
+        Gemfile \
+        index.md \
+    \
+    /app/
+
+WORKDIR /app/
+RUN bundle install
+CMD ["bundle", "exec", "jekyll", "serve", "--host", "0.0.0.0"]

README.md

@@ -22,3 +22,13 @@ This is the site at http://semver.org/ that describes the Semantic Versioning sp
    bundle exec jekyll serve
    ```
 4. Open http://localhost:4000.
+
+## Running locally with docker-compose
+
+If you have [docker-compose](https://docs.docker.com/compose/) installed:
+
+1. Build Docker image and start container instance:
+   ```
+   docker-compose up
+   ```
+2. Open http://localhost:4000.

docker-compose.yml

@@ -0,0 +1,12 @@
+# Copyright (C) 2019 Sebastian Pipping <sebastian@pipping.org>
+# Licensed under the MIT license
+
+version: '3'
+
+services:
+  semver-org:
+    build: .
+    ports:
+      - "127.0.0.1:4000:4000"
+    volumes:
+      - .:/app/