Initial commit

.dockerignore

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+node_modules
+npm-debug.log

.gitignore

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+node_modules
+npm-debug.log

Dockerfile

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+FROM node:boron
+
+# Create app directory
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app
+
+# Install app dependencies
+COPY package.json /usr/src/app/
+RUN npm install
+
+# Bundle app source
+COPY . /usr/src/app
+
+EXPOSE 3000
+CMD [ "npm", "start" ]

package.json

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+{
+  "name": "vivace",
+  "version": "1.0.0",
+  "description": "Extract prominent colors from an image",
+  "main": "server.js",
+  "dependencies": {
+    "express": "^4.14.1",
+    "node-vibrant": "^2.1.2"
+  },
+  "scripts": {
+    "start": "node server.js"
+  },
+  "author": "Matteo Giordano <[email protected]>",
+  "license": "MIT"
+}

server.js

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+var http = require('http');
+var express = require('express');
+var Vibrant = require('node-vibrant');
+
+var app = express();
+var server = http.createServer(app);
+
+app.get('/', function (req, res) {
+  var imgUrl = req.query.imgUrl;
+
+  if (imgUrl == undefined) {
+    res.status(400).send('Missing `imgUrl` parameter');
+    return;
+  }
+
+  Vibrant.from(imgUrl).getPalette(function (err, palette) {
+    if (err != null) {
+      res.status(500).send(err.toString());
+    }
+
+    res.json(palette);
+  });
+});
+
+server.listen(process.env.PORT || 3000, process.env.IP || "0.0.0.0", function () {
+  var addr = server.address();
+  console.log("Vivace listening at", addr.address + ":" + addr.port);
+});