First working rocket chat.

rocketchat/docker-compose.yml

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+# Update the .env file
+# make sure you use the $PREFIX from .env for project_name
+# docker-compose -p project_name up -d
+
+version: '2'
+
+networks:
+  traefik_web:
+    external:
+      name: traefik_web
+
+volumes:
+  rocketchat:
+  rocketchat-db:
+  rocketchat-dump:
+  rocketchat-scripts:
+
+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:
+      - rocketchat:/app/uploads
+    networks:
+      - traefik_web
+    environment:
+      - PORT=3000
+      - ROOT_URL=http://chat.nickyeoman.com
+      - 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.enable=true"
+      - "traefik.http.routers.${PREFIX}_chat.rule=Host(`${DOMAIN_NAME}`)"
+      - "traefik.http.routers.${PREFIX}_chat.entrypoints=websecure"
+      - "traefik.http.routers.${PREFIX}_chat.tls=true"
+      - "traefik.http.services.${PREFIX}_chat.loadbalancer.server.port=3000"
+
+  mongo:
+    image: mongo:4.0
+    restart: unless-stopped
+    volumes:
+     - rocketchat-db:/data/db
+     #- ./data/dump:/dump
+    networks:
+      - traefik_web
+    command: mongod --smallfiles --oplogSize 128 --replSet rs0 --storageEngine=mmapv1
+    labels:
+      - "traefik.enable=false"
+
+  # this container's job is just run 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
+    networks:
+      - traefik_web
+
+  # 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:
+      - rocketchat-scripts:/home/hubot/scripts
+    networks:
+      - traefik_web
+  # 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