Add livereload support

We support this using supervisor as this seems to work well with
Docker.

Author: madnificent

Dockerfile

@@ -11,7 +11,7 @@ COPY . /usr/src/app
 RUN ln -s /app/app.js /usr/src/app/
 RUN npm install
 
-CMD sh start.sh
+CMD sh boot.sh
 
 ONBUILD ADD . /app/
 ONBUILD RUN cd /usr/src/app && npm install

boot.sh

@@ -0,0 +1,7 @@
+#! /bin/sh
+./node_modules/supervisor/lib/cli-wrapper.js \
+    -w /usr/src/app,/app \
+    -i /usr/src/app/node_modules,/app/node_modules \
+    -e .js \
+    -k --ignore-symlinks \
+    -x sh start.sh

package.json

@@ -20,7 +20,8 @@
     "babel-cli": "^6.18.0",
     "babel-preset-es2015": "^6.18.0",
     "babel-preset-es2016": "^6.16.0",
-    "babel-preset-es2017": "^6.16.0"
+    "babel-preset-es2017": "^6.16.0",
+    "supervisor": "^0.12.0"
   },
   "author": "Aad Versteden <aad.versteden@gmail.com>",
   "license": "MIT",

start.sh

@@ -1,5 +1,10 @@
 #! /bin/sh
+
+## Kill lingering processes
+ps aux | grep babel-node | awk '{print $1}' | xargs kill -9
+
+## Install new dependencies
 npm install
 
+## Run using babel
 NODE_PATH=`pwd`/node_modules:$NODE_PATH ./node_modules/babel-cli/bin/babel-node.js app.js --presets es2015,es2016,es2017
-