Allow HOST to be set for listening binding

Dockerfile

@@ -1 +1,16 @@
 FROM node:4-onbuild
+ARG DOMAIN=runfullstack.co
+
+COPY ./config /usr/src/app
+ENV NODE_ENV production
+
+RUN sed -i -e "s/config\/sslcerts\/key.pem/\/etc\/letsencrypt\/live\/$DOMAIN\/privkey.pem/g" /usr/src/app/config/production.json && \
+    sed -i -e "s/config\/sslcerts\/cert.pem/\/etc\/letsencrypt\/live\/$DOMAIN\/cert.pem/g" /usr/src/app/config/production.json
+
+RUN apt-get update -yq && \
+    apt-get install -yq supervisor && \
+    mkdir -p /var/log/supervisor
+
+COPY ./supervisord.conf /etc/supervisor/conf.d/signalmaster.conf
+
+CMD ["/usr/bin/supervisord"]

README.md

@@ -58,3 +58,13 @@ To run the image execute this:
     docker run --name signalmaster -d -p 8888:8888 signalmaster
 
 This will start a signal master server on port 8888 exposed on port 8888.
+
+## Differences
+
+This version allows you to set the host for listening.
+
+    docker build -t signalmaster .
+
+Run the image:
+
+    docker run -d -p 8080:8080 -e PORT=8080 -e HOST=0.0.0.0 -e NODE_ENV=production auser/signalmaster

config/development.json

@@ -2,6 +2,7 @@
   "isDev": true,
   "server": {
     "port": 8888,
+    "host": "0.0.0.0",
     "/* secure */": "/* whether this connects via https */",
     "secure": false,
     "key": null,

config/production.json

@@ -2,6 +2,7 @@
   "isDev": false,
   "server": {
     "port": 8888,
+    "host": "0.0.0.0",
     "/* secure */": "/* whether this connects via https */",
     "secure": true,
     "key": "config/sslcerts/key.pem",

server.js

@@ -4,6 +4,8 @@ var yetify = require('yetify'),
     fs = require('fs'),
     sockets = require('./sockets'),
     port = parseInt(process.env.PORT || config.server.port, 10),
+    host = process.env.HOST || config.server.host,
+    le_domain = process.env.DOMAIN || false,
     server_handler = function (req, res) {
         res.writeHead(404);
         res.end();
@@ -12,6 +14,18 @@ var yetify = require('yetify'),
 
 // Create an http(s) server instance to that socket.io can listen to
 if (config.server.secure) {
+  var fileExists = function (fp) {
+    try { fs.accessSync(fp); return true } catch (err) { return false; }
+  }
+  if (le_domain) {
+    var le_path = "/etc/letsencrypt/live/" + le_domain + "/";
+    if (fileExists(le_path + "privkey.pem")) {
+      config.server.key = le_path + "privkey.pem"
+    }
+    if (fileExists((le_path + "cert.pem"))) {
+      config.server.cert = le_path + "cert.pem"
+    }
+  }
     server = require('https').Server({
         key: fs.readFileSync(config.server.key),
         cert: fs.readFileSync(config.server.cert),
@@ -28,8 +42,8 @@ if (config.uid) process.setuid(config.uid);
 
 var httpUrl;
 if (config.server.secure) {
-    httpUrl = "https://localhost:" + port;
+    httpUrl = "https://" + host + ":" + port;
 } else {
-    httpUrl = "http://localhost:" + port;
+    httpUrl = "http://" + host + ":" + port;
 }
 console.log(yetify.logo() + ' -- signal master is running at: ' + httpUrl);

supervisord.conf

@@ -0,0 +1,11 @@
+[supervisord]
+nodaemon=true
+
+[program:signalmaster]
+command = /usr/local/bin/node /usr/src/app/server.js
+directory = /usr/src/app
+autostart = true
+autorestart = true
+stdout_logfile = /var/log/supervisor/signalmaster.log
+stderr_logfile = /var/log/supervisor/signalmaster_err.log
+environment = NODE_ENV="production"