[Bug]: Project Ruby on Rails + Sidekick on docker-compose not able to receive requests

[matheusvetor]

Error Message and Logs

no available server

Steps to Reproduce

My goal is to have a project building from Docker Compose to be able to run 2 services (Rails App, Sidekick).

Below is my DockerfileProduction and docker-compose-production.yml

FROM matheusvetor/qualicert-web-ruby:v1

RUN mkdir /app
WORKDIR /app
ADD . /app

RUN bundle install -j4

RUN bundle exec rails assets:precompile

RUN bundle exec rails db:migrate

version: "3"
services:
  web:
    build: 
      context: .
      dockerfile: DockerfileProduction
    platform: linux/amd64
    command: bundle exec puma -C config/puma.rb
    healthcheck:
      test:
        - CMD-SHELL
        - "curl -s --noproxy localhost localhost:3000 | grep -q 'OK' || exit 1"
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 20s
    environment:
      - TZ=America/Sao_Paulo
    ports:
      - "3000:3000"

  sidekiq:
    build: 
      context: .
      dockerfile: DockerfileProduction
    platform: linux/amd64
    command: bundle exec sidekiq -C config/sidekiq.yml
    environment:
      - TZ=America/Sao_Paulo
    healthcheck:
      test:
        - CMD-SHELL
        - "ps aux | grep '[s]idekiq 5' || false"
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 20s

However, I have two main issues with that:

• I have 2 standalone services (redis, postgres) that arent visible by the created resources from docker-compose. The only way I found is to use REDIS_URL and DATABASE_URL with public url.
• The service (web) has a URL, is mapped to the 3000 port but cant receive any request (even I configuring in advanced tab Connect To Predefined Network ).

What I'm doing wrong?

I already could make work with nix packages but running only the web project.

Example Repository URL

No response

Coolify Version

v4.0.0-beta.420.9

Are you using Coolify Cloud?

No (self-hosted)

Operating System and Version (self-hosted)

Ubuntu 24.04

Additional Information

A thing I noted is that project hasn't the traefik configuration.

[djsisson]

@matheusvetor docker compose is given an isolated network by default, if your db and redis are in coolify network you need to tick connect to predefined network, make sure they are not public!

Remove the port binding to your host as that won't help for your web container.
But if it can't recieve requests then either it's not running on port 3000 in that container or is not bound to 0.0.0.0 so can't accept network requests

Please note if the health check fails this will also make the container unavailable for web requests.

[matheusvetor]

@djsisson Thanks for your response.

I already try to remove the port bind on docker compose. Not worked.
I already try to tick connect to predefined network. Not worked. Before tick that, the postgres and redis standalone arent visible by the services.

[djsisson]

What are the logs from the running containers

[EternalC0der]

The problem is that the traefik and caddy labels are now being removed from the docker-compose, which causes a no available server error for the applications.

This problem started happening for me after I upgraded my Coolify instance from beta.420 to beta.421.

[djsisson]

If you run docker inspect on your containers what labels do you see?

Have you ticked raw compose by mistake?

[EternalC0der]

the Docker Compose Content look like this:

And no, I have not enabled raw compose.

I downgraded to version 420.6, it's working on that version. (same config)

[williamrice]

the Docker Compose Content look like this:

And no, I have not enabled raw compose.

I downgraded to version 420.6, it's working on that version. (same config)

Same issue here on an ASP.NET app. I went back to 420.6 and my config works. I noticed the null network values in the translated Coolify Docker Compose. I was getting the Traefik 404 page, and the coolify-proxy logs showed this:

2025-07-06T20:04:14Z ERR error="service \"budgettracker-web-tgc0w8kwsso48sg0oc0cgsko\" error: unable to find the IP address for the container \"/budgettracker-web-tgc0w8kwsso48sg0oc0cgsko-200244467977\": the server is ignored" container=budgettracker-web-tgc0w8kwsso48sg0oc0cgsko-1c5c2ca3d5bca7187f65c4e40290aaf7c0e2f566bd384cb661deb333a68049b3 providerName=docker

[SerenityNrrd]

how do you rollback to the previous version ?

-edited for those that don't know

curl -fsSL https://cdn.coollabs.io/coolify/install.sh | bash -s 4.0.0-beta.420.6

@andrasbacsai I rolled back but now i am getting Undefined variable $savedService -- how can i fix this please

[andrasbacsai]

I found the issue and fixing in the next version soon.