Develop locally with docker

.gitignore

@@ -3,3 +3,5 @@
 _site/
 node_modules/
 .vscode/
+.jekyll-metadata
+vendor/

README.md

@@ -19,28 +19,17 @@ Labels are assigned based on [Sensible Github Labels](https://github.com/Releque
 ## Compile and run locally
 
 This site runs via github pages, with automatically building PR previews via netlify.
-If you wish to compile and run this site locally, you will need to have ruby installed.
-
-If you're not familiar with ruby, consider using `rvm` (https://rvm.io/).
-Once you have Ruby installed, follow these instructions while in the project directory
-
-> Instructions
->
->     1. Install the jekyll and bundler gems.
->
->     `gem install jekyll bundler`
->
->     2. Create a new Jekyll site at ./myblog.
->
->     ...
->
->     3. Build the site and make it available on a local server.
->
->     `bundle exec jekyll serve`
->
->     4. Browse to http://localhost:4000
-
-Adapted from https://jekyllrb.com/docs/
+
+This project uses git submodules, so you will need to run the following commands
+to fully clone the repo.
+
+```bash
+git submodule init
+git submodule update
+```
+
+You can run the site locally using `docker-compose up` and browse to
+http://localhost:4000
 
 ## License
 

docker-compose.yml

@@ -0,0 +1,11 @@
+version: "3.9"
+
+services:
+  web:
+    image: docker.io/jekyll/jekyll
+    volumes:
+      - .:/srv/jekyll:Z
+      - ./vendor/bundle:/usr/local/bundle:Z
+    ports:
+      - "4000:4000"
+    command: jekyll serve --incremental --watch