Simple Docker development setup

I have now embraced the all-Docker lifestyle. Setting this up for myself
and anyone else who finds it convenient.

Author: outoftime

Dockerfile

@@ -0,0 +1,8 @@
+FROM node:8.10
+
+RUN echo '{"allow_root": true}' > /root/.bowerrc
+
+WORKDIR /app
+ADD . /app
+
+EXPOSE 3000

README.md

@@ -132,8 +132,15 @@ feedback from dozens of instructors.
 
 ### Running locally ###
 
-Pretty easy. Just check out the code. You’ll need [Yarn](https://yarnpkg.com/),
-which is the cool new NPM. It’s [easy to
+#### With Docker
+
+If you already use Docker, your best bet is to use it for Popcode development
+too. A simple `docker-compose up` will do the trick.
+
+#### Without Docker
+
+Still pretty easy. Just check out the code. You’ll need
+[Yarn](https://yarnpkg.com/), which is the cool new NPM. It’s [easy to
 install](https://yarnpkg.com/en/docs/install).
 
 Once you’ve got it just run:

docker-compose.yml

@@ -0,0 +1,12 @@
+version: '3'
+services:
+  app:
+    build: .
+    command: yarn dev
+    ports:
+      - "3000:3000"
+    volumes:
+      - .:/app:cached
+      - node_modules:/app/node_modules
+volumes:
+  node_modules: