docker swarm custom containers with traefik - express

Question

I'm trying to set up a docker swarm using traefik in digital ocean. I followed this tutorial and I get it to work entirely until I add one of my custom made containers. I am trying to simply add one first (there are 14 in total) and they are all very very similar, all of them are express apps that serve as restful API's handling one resource per service. However, when trying to access that specific subdomain I get a connection refused error.
Here's my docker-stack.yml file:
version: '3.6'
services:
traefik:
image: traefik:latest
networks:
- mynet
volumes:
- /var/run/docker.sock:/var/run/docker.sock
- ./traefik.toml:/traefik.toml
ports:
- "80:80"
- "8080:8080"
command: --api
main:
image: nginx
networks:
- mynet
deploy:
labels:
- "traefik.port=80"
- "traefik.backend=main"
- "traefik.frontend.rule=Host:domain.com"
two:
image: jwilder/whoami
networks:
- mynet
deploy:
labels:
- "traefik.port=8000"
- "traefik.backend=two"
- "traefik.frontend.rule=Host:two.domain.com"
three:
image: emilevauge/whoami
networks:
- mynet
deploy:
labels:
- "traefik.port=80"
- "traefik.backend=three"
- "traefik.frontend.rule=Host:three.domain.com"
user-service:
image: hollarves/users:latest
env_file:
- .env.user
networks:
- mynet
deploy:
labels:
- "traefik.port=80"
- "traefik.backend=users"
- "traefik.frontend.rule=Host:users.domain.com"
networks:
mynet:
driver: overlay
As I said, going to two.domain.com and three.domain.com works fine, and the whoami containers respond with their info. However, I get a connection refused error when trying users.domain.com
Note: domain.com is an actual domain I am using that is live pointing to a digitalocean cluster, I'm just hiding it for privacy reasons.
The entrypoint for this users-service is:
if (process.env.NODE_ENV !== "production") {
require("dotenv").load()
}
const express = require("express"),
bodyParser = require("body-parser"),
logger = require("morgan"),
//helmet = require("helmet"),
cors = require("cors"),
PORT = parseInt(process.env.PORT, 10) || 80
const server = express(),
routes = require("./server/routes")
//server.use(helmet())
server.use(cors())
server.use(logger("dev"))
server.use(bodyParser.json())
server.use("/", routes)
/*eslint no-console: ["error", { allow: ["log"] }] */
const serverObj = server.listen(PORT, () => { console.log("Server listening in PORT ", PORT) })
module.exports = serverObj
I can also confirm that this service is listening on PORT 80 as that's what it outputs when fetching logs from it using docker service logs test-stack_user-service:
test-stack_user-service.1.35p3lxzovphr#node-2 | > users-mueve#0.0.1 start /usr/src/app
test-stack_user-service.1.35p3lxzovphr#node-2 | > node server.js
test-stack_user-service.1.35p3lxzovphr#node-2 |
test-stack_user-service.1.35p3lxzovphr#node-2 | Server listening in PORT 80
Here is my traefik.toml config file just in case:
debug = true
logLevel = "DEBUG"
defaultEntryPoints = ["http"]
[entryPoints]
[entryPoints.http]
address = ":80"
[retry]
[docker]
endpoint="unix:///var/run/docker.sock"
exposedByDefault=true
watch=true
swarmmode=true
I can also see the containers in the traefik dashboard like I used to in my local environment.
I feel like I'm missing a very small detail that is preventing my service from working correctly. Any pointers will be extremely appreciated.
Thanks!