Add Dockerized build environment & scripts

Dockerfile

@@ -0,0 +1,14 @@
+FROM jekyll/jekyll:4
+
+# Set default locale for the environment
+ENV LC_ALL C.UTF-8
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US.UTF-8
+
+COPY Gemfile Gemfile.lock ./
+RUN bundle install
+
+ENTRYPOINT ["/usr/local/bin/bundle", "exec", \
+  "jekyll", "serve",   \
+  "--host", "0.0.0.0", \
+  "--port", "4000"]

README.md

@@ -12,28 +12,44 @@ zlib1g-dev
 ```
 
 We recommend installing gems to a (hidden) directory in your home folder:
-```bash
-echo '' >> ~/.bashrc
-echo '# Install Ruby Gems to ~/.gems' >> ~/.bashrc
-echo 'export GEM_HOME="$HOME/.gems"' >> ~/.bashrc
-echo 'export PATH="$HOME/.gems/bin:$PATH"' >> ~/.bashrc
-echo '' >> ~/.bashrc
-source ~/.bashrc
+```sh-session
+$ echo '' >> ~/.bashrc
+$ echo '# Install Ruby Gems to ~/.gems' >> ~/.bashrc
+$ echo 'export GEM_HOME="$HOME/.gems"' >> ~/.bashrc
+$ echo 'export PATH="$HOME/.gems/bin:$PATH"' >> ~/.bashrc
+$ echo '' >> ~/.bashrc
+$ source ~/.bashrc
 ```
 
 Install jekyll and bundler:
-```bash
-gem install jekyll bundler
+```sh-session
+$ gem install jekyll bundler
 ```
 
 Install gems:
-```bash
-bundle install
+```sh-session
+$ bundle install
 ```
 
 Build and serve locally with:
-```bash
-bundle exec jekyll serve --host 0.0.0.0
+```sh-session
+$ bundle exec jekyll serve --host 0.0.0.0
 ```
 
 The site should now be available at http://0.0.0.0:4000/ on your local machine, and your local machine's IP address on your network—great for testing on mobile OSes.
+
+### Alternative: building with Docker
+
+You'll need Docker installed on your system.
+
+Build the Docker image:
+```sh-session
+$ bin/build-container
+```
+
+Build and serve locally with:
+```sh-session
+$ bin/serve
+```
+
+The site should now be available at http://0.0.0.0:4000/

bin/build-container

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+cd $(git rev-parse --show-toplevel) # work from repo dir
+docker build -t io.elementary.releases .

bin/serve

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+cd $(git rev-parse --show-toplevel) # work from repo dir
+docker run --rm -it \
+       -v $(pwd):/srv/jekyll/ \
+       -p 4000:4000 \
+       io.elementary.releases