bring back node, workaround for eth0 detection

eth0 detection bug: nodejs/node-v0.x-archive#9029

Dockerfile

@@ -18,8 +18,8 @@ ADD gulpfile.js $WORKDIR
 
 RUN apt-get update
 RUN apt-get install -y curl unzip
-RUN curl -sL https://deb.nodesource.com/setup_iojs_1.x | bash -
-RUN apt-get install -y iojs
+RUN curl -sL https://deb.nodesource.com/setup_0.12 | bash -
+RUN apt-get install -y nodejs
 
 RUN npm install gulp gulp-connect
 

gulpfile.js

@@ -1,12 +1,20 @@
 var gulp = require('gulp');
 var connect = require('gulp-connect');
+var exec = require('child_process').execSync;
+
 var os = require('os');
 
 var mounted_dir = '/mnt';
 var mounted_dir_files = mounted_dir + '/**';
 
+// workaround for https://github.com/joyent/node/issues/9029
+var ip_command = 'ip addr show eth0 | ' +
+    'awk \'$2 ~/172\.17/ { gsub(/\\/.*/, "", $2); print $2 }\'';
+var ip_address = exec(ip_command);
+
+console.log(ip_address);
+
 var ifaces = os.networkInterfaces();
-console.log(ifaces);
 var ip_address = ifaces['eth0'][0].address
 
 gulp.task('init', function () {