first code

.env.example

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+slack_key=xoxb
+slack__client_id=
+slack__client_secret=
+slack__access_token=xoxp
+imgur__client_id=
+imgur__client_secret=
+REDIS_URL=redis://127.0.0.1:6379
+GITHUB__ACCESS_KEY=
+GITHUB__REPO=
+GITHUB__OWNER=

.gitignore

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+.env
+.env.*
+node_modules
+!.env.example

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch Program",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "program": "${workspaceFolder}/bin/www"
+        },
+        {
+            "name": "Attach",
+            "port": 9229,
+            "request": "attach",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "type": "pwa-node"
+        }
+    ]
+}

app.js

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+var express = require('express');
+var path = require('path');
+var cookieParser = require('cookie-parser');
+var logger = require('morgan');
+
+let dotenv = require('dotenv-flow');
+dotenv.config();
+
+const { createEventAdapter } = require('@slack/events-api');
+const slackEvents = createEventAdapter(process.env.slack_key);
+
+var indexRouter = require('./routes/index');
+var usersRouter = require('./routes/users');
+
+// Create an express application
+const app = express();
+(async () => {
+
+    app.use(logger('dev'));
+    // Plug the adapter in as a middleware
+    app.use('/my/path', slackEvents.requestListener());
+    app.use(express.json());
+    app.use(express.urlencoded({ extended: false }));
+    app.use(cookieParser());
+    app.use(express.static(path.join(__dirname, 'public')));
+
+    app.use('/', indexRouter);
+    app.use('/auth', usersRouter);
+
+    function errorHandler(err, req, res, next) {
+        if (res.headersSent) {
+            return next(err);
+        }
+        res.status(500);
+        res.status(500).send('Something broke!');
+        return res;
+    }
+
+    app.use(errorHandler);
+})();
+
+module.exports = app;

bin/www

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+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var app = require('../app');
+var debug = require('debug')('arturito:server');
+var http = require('http');
+
+/**
+ * Get port from environment and store in Express.
+ */
+
+var port = normalizePort(process.env.PORT || '3000');
+app.set('port', port);
+
+/**
+ * Create HTTP server.
+ */
+
+var server = http.createServer(app);
+
+/**
+ * Listen on provided port, on all network interfaces.
+ */
+
+server.listen(port);
+server.on('error', onError);
+server.on('listening', onListening);
+
+/**
+ * Normalize a port into a number, string, or false.
+ */
+
+function normalizePort(val) {
+  var port = parseInt(val, 10);
+
+  if (isNaN(port)) {
+    // named pipe
+    return val;
+  }
+
+  if (port >= 0) {
+    // port number
+    return port;
+  }
+
+  return false;
+}
+
+/**
+ * Event listener for HTTP server "error" event.
+ */
+
+function onError(error) {
+  if (error.syscall !== 'listen') {
+    throw error;
+  }
+
+  var bind = typeof port === 'string'
+    ? 'Pipe ' + port
+    : 'Port ' + port;
+
+  // handle specific listen errors with friendly messages
+  switch (error.code) {
+    case 'EACCES':
+      console.error(bind + ' requires elevated privileges');
+      process.exit(1);
+      break;
+    case 'EADDRINUSE':
+      console.error(bind + ' is already in use');
+      process.exit(1);
+      break;
+    default:
+      throw error;
+  }
+}
+
+/**
+ * Event listener for HTTP server "listening" event.
+ */
+
+function onListening() {
+  var addr = server.address();
+  var bind = typeof addr === 'string'
+    ? 'pipe ' + addr
+    : 'port ' + addr.port;
+  debug('Listening on ' + bind);
+}

configs/redis.work.js

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+module.exports = async () => {
+    let REDIS_URL = process.env.REDIS_URL || "redis://127.0.0.1:6379";
+    let Queue = require('bull');
+
+    let workQueue = new Queue('work', REDIS_URL);
+
+    // workQueue.on('global:completed', (jobId, result) => {
+    //     console.log(`Job completed with result ${result}`);
+    // });
+
+    return workQueue;
+}

docker-compose.prod.yml

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+
+services:
+    redis:
+        image: "redis:alpine"
+        ports:
+            - "6379:6379"
+        networks:
+            - robotito
+    backend: 
+        build:
+            context: .
+            dockerfile: node.dockerfile
+        ports:
+            - "3000:3000"
+        environment: 
+            - NODE_ENV=production
+        networks:
+            - robotito
+        depends_on:
+            - redis
+networks:
+    robotito:

docker-compose.yml

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+
+services:
+    redis:
+        image: "redis:alpine"
+        ports:
+            - "6379:6379"

node.dockerfile

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+FROM node:14.10.1-alpine
+
+# Create app directory
+WORKDIR /usr/src/app
+
+# Install app dependencies
+# A wildcard is used to ensure both package.json AND package-lock.json are copied
+# where available (npm@5+)
+COPY package*.json ./
+
+RUN npm install
+# If you are building your code for production
+# RUN npm ci --only=production
+
+# Bundle app source
+COPY . .
+
+EXPOSE 3000
+
+ENV NODE_ENV=production
+
+CMD npm run prod