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jordanstephensjordanstephens
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fix errors in the production rails dockerfile
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‎.devcontainer/Dockerfile‎

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FROM mcr.microsoft.com/devcontainers/typescript-node:22-bookworm

‎.devcontainer/devcontainer.json‎

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{
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"build": {
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"dockerfile": "Dockerfile",
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"context": ".."
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},
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"features": {
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"ghcr.io/defanglabs/devcontainer-feature/defang-cli:1.0.4": {},
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"ghcr.io/devcontainers/features/docker-in-docker:2": {},
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"ghcr.io/devcontainers/features/aws-cli:1": {}
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}
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}

‎.github/workflows/deploy.yaml‎

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name: Deploy
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on:
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push:
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branches:
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- main
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jobs:
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deploy:
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environment: playground
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runs-on: ubuntu-latest
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permissions:
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contents: read
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id-token: write
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steps:
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- name: Checkout Repo
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uses: actions/checkout@v4
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- name: Deploy
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uses: DefangLabs/[email protected]

‎README.md‎

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# Node.js & SocketIO
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[![1-click-deploy](https://defang.io/deploy-with-defang.png)](https://portal.defang.dev/redirect?url=https%3A%2F%2Fgithub.com%2Fnew%3Ftemplate_name%3Dsample-nodejs-chatroom-template%26template_owner%3DDefangSamples)
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This is a minimal chat application that shows how to use Socket.IO with Node.js with minimal code deployed with Defang.
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## Prerequisites
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Install the Defang CLI by following the instructions in the [Defang CLI documentation](https://docs.defang.io/docs/getting-started).
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## Build and run the application
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If you have environment variables configured for your [own cloud account](https://docs.defang.io/docs/concepts/defang-byoc), this will deploy the application to your cloud account, otherwise it will deploy to the Defang cloud.
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```sh
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defang compose up
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```
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---
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Title: Node.js & SocketIO
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Short Description: A minimal chat application that shows how to use Socket.IO with Node.js.
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Tags: Node.js, Chat, Socket.IO, JavaScript
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Languages: nodejs

‎app/Dockerfile‎

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# Use the slim version of Node.js on Debian Bookworm as the base image
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FROM node:20-bookworm-slim
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RUN apt-get update -qq \
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&& apt-get install -y curl \
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&& apt-get clean \
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&& rm -rf /var/lib/apt/lists/*
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# Set the working directory to /app
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WORKDIR /app
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# Copy package.json and package-lock.json into the container at /app
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COPY package*.json ./
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# Install any needed packages specified in package.json
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RUN npm install
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# Bundle app source
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COPY . .
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# Make port 3000 available to the world outside this container
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EXPOSE 3000
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# Run the app when the container launches
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CMD ["node", "main.js"]

‎app/index.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Simple Chat App</title>
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</head>
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<body>
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<input type="text" id="name" placeholder="Enter your name" required>
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<input type="text" id="message" placeholder="Enter a message" required>
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<button onclick="sendMessage()">Send</button>
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<ul id="messages"></ul>
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<script src="/socket.io/socket.io.js"></script>
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<script>
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var socket = io();
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socket.on('message', function(msg){
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var ul = document.getElementById('messages');
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var li = document.createElement('li');
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li.appendChild(document.createTextNode(msg.name + ': ' + msg.message));
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ul.appendChild(li);
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});
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function sendMessage(){
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var name = document.getElementById('name').value;
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var message = document.getElementById('message').value;
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socket.emit('message', { name: name, message: message });
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}
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</script>
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</body>
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</html>

‎app/main.js‎

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const express = require('express');
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const http = require('http');
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const app = express();
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const server = http.createServer(app);
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const io = require('socket.io')(server);
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const bodyParser = require('body-parser');
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const path = require('path');
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app.use(bodyParser.json());
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app.use(bodyParser.urlencoded({ extended: true }));
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io.on('connection', (socket) => {
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socket.on('message', ({name, message}) => {
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io.emit('message', {name, message});
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});
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});
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app.get('/', (req, res) => {
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res.sendFile(path.join(__dirname, 'index.html'));
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});
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const port = process.env.PORT || 3000;
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server.listen(port, () => {
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console.log('Server started on port ' + port);
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});

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