Detailed steps for installing rockerChat in docker and setting up a chat room

version: '2'
services:
  rocketchat:
   image: rocketchat/rocket.chat:latest
   command: >
     bash -c
       "for i in `seq 1 30`; do
         node main.js &&
         s=$$? && break || s=$$?;
         echo \"Tried $$i times. Waiting 5 secs...\";
         sleep 5;
       done; (exit $$s)"
   restart: unless-stopped
   volumes:
     - ./uploads:/app/uploads
   environment:
     -PORT=3000
     - ROOT_URL=http://localhost:3000
     - MONGO_URL=mongodb://mongo:27017/rocketchat
     - MONGO_OPLOG_URL=mongodb://mongo:27017/local
     - MAIL_URL=smtp://smtp.email
# - HTTP_PROXY=http://proxy.domain.com
# - HTTPS_PROXY=http://proxy.domain.com
   depends_on:
     - mongo
   ports:
     - 3000:3000
   labels:
     - "traefik.backend=rocketchat"
     - "traefik.frontend.rule=Host: your.domain.tld"
  mongo:
   image: mongo:4.0
   restart: unless-stopped
   volumes:
     - ./data/db:/data/db
     #- ./data/dump:/dump
   command: mongod --smallfiles --oplogSize 128 --replSet rs0 --storageEngine=mmapv1
   labels:
     - "traefik.enable=false"
  # This container's job is just running the command to initialize the replica set.
  # it will run the command and remove himself (it will not stay running)
  mongo-init-replica:
   image: mongo:4.0
   command: >
     bash -c
       "for i in `seq 1 30`; do
         mongo mongo/rocketchat --eval \"
           rs.initiate({
             _id: 'rs0',
             members: [ { _id: 0, host: 'localhost:27017' } ]})\" &&
         s=$$? && break || s=$$?;
         echo \"Tried $$i times. Waiting 5 secs...\";
         sleep 5;
       done; (exit $$s)"
   depends_on:
     - mongo
  # hubot, the popular chatbot (add the bot user first and change the password before starting this image)
  hubot:
   image: rocketchat/hubot-rocketchat:latest
   restart: unless-stopped
   environment:
     - ROCKETCHAT_URL=rocketchat:3000
     - ROCKETCHAT_ROOM=GENERAL
     -ROCKETCHAT_USER=bot
     -ROCKETCHAT_PASSWORD=botpassword
     - BOT_NAME=bot
  # you can add more scripts as you'd like here, they need to be installable by npm
     - EXTERNAL_SCRIPTS=hubot-help,hubot-seen,hubot-links,hubot-diagnostics
   depends_on:
     - rocketchat
   labels:
     - "traefik.enable=false"
   volumes:
     - ./scripts:/home/hubot/scripts
  # this is used to expose the hubot port for notifications on the host on port 3001, e.g. for hubot-jenkins-notifier
   ports:
     - 3001:8080
  #traefik:
  # image: traefik:latest
  # restart: unless-stopped
  # command: >
  # traefik
  # --docker
  # --acme=true
  # --acme.domains='your.domain.tld'
  # --acme.email='[email protected]'
  # --acme.entrypoint=https
  # --acme.storagefile=acme.json
  # --defaultentrypoints=http
  # --defaultentrypoints=https
  # --entryPoints='Name:http Address::80 Redirect.EntryPoint:https'
  # --entryPoints='Name:https Address::443 TLS.Certificates:'
  # ports:
  # - 80:80
  # - 443:443
  # volumes:
  # - /var/run/docker.sock:/var/run/docker.sock

server {
       listen 443;
       # rocketchat
       server_name rocketchat.domain.com;
       ssl on;
       #root html;
       # index index.html index.htm;
       # The SSL certificate is placed in the domain folder at the same level ssl_certificate cert/domain/rocketchat.domain.com_bundle.crt;
       ssl_certificate_key cert/domain/rocketchat.domain.com.key;
       ssl_session_timeout 5m;
       ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
       ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
       ssl_prefer_server_ciphers on;
       location / {
           #Point to a current service port proxy_pass http://127.0.0.1:5001;
           #Set the request header and pass the header information to the server proxy_redirect off;
           proxy_set_header Host $host;
           proxy_http_version 1.1;
           proxy_set_header Upgrade $http_upgrade;
           proxy_set_header Connection "upgrade";
       }
   }