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Cantinarr Cantinarr

Container

MediaTools

Media requests and server management in one app. Household members browse and request movies, shows, books, and music, follow downloads, and get notified when content is ready. Administrators manage Radarr, Sonarr, Chaptarr, Lidarr, and download clients, review approvals, and investigate stuck downloads. AI is optional, and authorized MCP clients can use the same server. GitHub: windoze95/cantinarr

Image details

Architecture: amd64, arm64
Image size: 182 MB
User: windoze95

Source details

Repo: windoze95/cantinarr
Stars: 30
Forks: 5
Language: Go
License: AGPL-3.0
Latest: v0.19.0 · 2 days ago
Updated: 5 hours ago
Website: cantinarr.com/

Configuration

Type
Container
Platform
linux
Image
ghcr.io/windoze95/cantinarr:latest
Ports
8585:8585/tcp
Volumes
/config : /portainer/Files/AppData/Cantinarr/config
Env vars
CANTINARR_PUSH_GATEWAY_URL=https://push.cantinarr.comCANTINARR_ARR_CALLBACK_URL=
Restart
unless-stopped

Notes

Web UI and API on port 8585. Radarr, Sonarr, Chaptarr, download clients, Tautulli, and Plex are all optional and are added from the admin UI after first run. Documentation: https://github.com/windoze95/cantinarr

Standalone Install

Select an install method, to see config/commands for deploying Cantinarr

Installation method

Install on Portainer

Import all app templates into your Portainer instance, for easy 1-click deploys

  1. Ensure both Docker and Portainer are installed, and up-to-date
  2. Log into your Portainer web UI
  3. Under Settings → App Templates, paste the below URL
  4. Head to Home → App Templates, and the list of apps will show up
  5. Select Cantinarr, fill in any config options, and hit Deploy

Template Import URL

https://raw.githubusercontent.com/Lissy93/portainer-templates/main/templates.json
Show Me demo

More install options in our documentation, or see windoze95/cantinarr for app-specific guidance.

Cantinarr logo


Cantinarr


Self-hosted media requests and server management.


CI Latest release License: AGPL-3.0 Join Discord


iPhone and iPad beta on TestFlight Android beta on Google Play


Website · Documentation · Live demo


Cantinarr lets your household and friends browse and request movies, TV shows, ebooks, audiobooks, and music. Administrators manage requests, libraries, and download clients from the same app. It connects to Radarr, Sonarr, Chaptarr, Lidarr, and more.

Preview

Discover movies and see what is available or requested Choose TV seasons to request and follow their availability Browse ebooks and audiobooks by title, author, or series Discover albums and genres with Music enabled in the navigation

Features

  • Movie, season, ebook, audiobook, and album requests with approvals and per-user limits.
  • Live availability, download progress, and Discord or push (free for the foreseeable future) notifications.
  • Library and download queue management across multiple service instances.
  • Plex, Jellyfin, Emby, and Audiobookshelf account access and playback links.
  • Connect links, passkeys, Plex sign-in, and OpenID Connect.
  • Kids accounts with movie and TV rating limits.
  • An optional AI agent for finding media, making requests, and admin troubleshooting, plus supervised repairs for persistent download problems.
  • An MCP server and a Seerr-compatible API for external tools.

Getting started

Run the server with Docker, Unraid, or a Linux binary, then follow the setup guide to connect your services and invite your household.
The web app is included. Mobile apps connect to your server and are available in beta:

Documentation

Community

Join Discord for help and discussion. Report bugs on GitHub or suggest and vote on features on the roadmap.
Pull requests are welcome. See the contributor guide and repository instructions. You can support development through GitHub Sponsors.

License

AGPL-3.0. Copyright (c) 2026 Julian Dice.
This product uses the TMDB API but is not endorsed or certified by TMDB.

Serve Cantinarr on your own domain behind Caddy, Nginx or Traefik. Fill in your domain and copy the result. It's a starting point, some apps need their own base URL or extra headers set too.

Proxying cantinarr.example.com to http://cantinarr:8585

Add this to your Caddyfile

cantinarr.example.com {
	reverse_proxy http://cantinarr:8585
}

Check the logs first

Nine times out of ten the logs tell you exactly what went wrong.

  • In Portainer, go to Containers, click the container, then Logs. Or run docker logs cantinarr
  • Exit codes help too: 137 means killed, usually out of memory. 126 or 127 means the command inside the image is broken.

Port already in use

If deployment fails with "Bind for 0.0.0.0:8585 failed: port is already allocated", something else on your server is using that port.

  • Find what's using it: sudo ss -tlnp | grep :8585
  • Stop the other service, or pick a different host port. In 8585:8585 only the left number is yours to change, the right one belongs to the app.

Running but the page won't load

The container is up but nothing appears in your browser.

  • Use your server's real IP: http://your-server-ip:8585. The 0.0.0.0 link Portainer shows isn't a real address.
  • Give it a minute after first deploy, cantinarr can take a while to initialise.
  • Make sure your firewall allows the port, e.g. sudo ufw allow 8585

Permission denied on volumes

If the logs show "permission denied", the app can't write to its data folder on the host.

  • Fix the ownership: sudo chown -R 1000:1000 /portainer/Files/AppData/Cantinarr/config

Image won't pull

Test the pull directly on the host: docker pull ghcr.io/windoze95/cantinarr:latest

  • "manifest unknown" means the tag no longer exists. This template uses latest, so try pinning a specific version instead.
  • "toomanyrequests" is the Docker Hub rate limit. Log in with docker login to raise it.
  • "no space left on device" means a full disk. Reclaim space with docker system prune

"exec format error"

This means the image was built for a different CPU architecture than your server.

  • This image supports: amd64, arm64
  • Check yours with uname -m: x86_64 is amd64, aarch64 is arm64. Raspberry Pi and other ARM boards are the usual culprits.

Container keeps restarting

The unless-stopped restart policy relaunches the app after every crash, so the real error can scroll past.

  • Check the logs right after a restart, the last few lines before it died are the useful ones.
  • Get the exit code with docker inspect cantinarr --format '{{.State.ExitCode}}'
  • Still stuck? Redeploy once with the restart policy set to no so the failure stays visible.

Required settings are blank

CANTINARR_ARR_CALLBACK_URL has no default value, and cantinarr may crash or misbehave if left empty.

  • Fill it in on the deploy screen before hitting deploy.

Raise an issue

Found something which isn't working as it should? Here's how to report it.

A single container

Cantinarr runs as one container, the simplest kind of app here. Just the one image to pull and nothing else wired up alongside it.

The app image

An image is the app packed up ready to go, everything Cantinarr needs bundled into one download. This template pulls ghcr.io/windoze95/cantinarr:latest, which Docker fetches once (about 182 MB) and then starts your own copy from.

Where the image comes from

Docker pulls its images from registries, public libraries of ready-built apps. Cantinarr's comes from the GitHub Container Registry, published by windoze95.

Version tags

The bit after the colon in the image name is the version tag. Here it's latest, which always points at the newest build, so a redeploy can bump you to a newer release without you asking. Pin a specific tag if you would rather stay on one version.

Which machines it runs on

Every image is built for particular CPU types. This one ships for amd64, arm64, so it runs on both regular x86 servers and ARM boards like a Raspberry Pi.

Ports

A port is the door the app answers on. A mapping like 8585:8585 means it's reachable on port 8585 of your server, where the left number is yours to change and the right one belongs to the app. It opens:

  • 8585:8585

Volumes

A volume is where Cantinarr keeps its files so they survive an update or a restart. Without one, anything it saves would sit inside the container and vanish the moment it's recreated. This template mounts:

  • /config from /portainer/Files/AppData/Cantinarr/config on the host

Environment variables

Environment variables are the settings you hand over when you deploy, things like a password or a timezone. Cantinarr takes 2 of them, and one needs a value before it'll start properly:

  • CANTINARR_PUSH_GATEWAY_URL, defaults to https://push.cantinarr.com. Push gateway for the companion iOS and Android apps. The server enrolls itself on first start; clear to disable push, or point it at your own gateway.
  • CANTINARR_ARR_CALLBACK_URL, needs a value. Origin your Radarr, Sonarr, and Chaptarr containers POST webhooks back to, for example http://192.168.1.10:8585. Leave blank to use whatever address you browse to. This is not the address people reach Cantinarr at; set that in the app under Settings, External Address. Formerly named CANTINARRPUBLICURL, which existing containers can keep using.

Restart policy

The restart policy here is unless-stopped, so Docker restarts Cantinarr after a crash or reboot, but leaves it off when you stop it on purpose. You can change this on the deploy screen. The choices are no (never restart), on-failure (only after a crash), unless-stopped (restart unless you stop it), and always (bring it back no matter what).

Networking

Nothing custom is set, so Cantinarr sits on Docker's default bridge network: its own private space that reaches the outside world only through the ports it publishes.

Container name

Once it's deployed, Portainer names the container cantinarr. That's what you'll spot in the containers list and use in commands like docker logs cantinarr.

Platform

The platform is linux, the kind of system the container is built to run on. Docker and Portainer handle this on a normal Linux server.

Open source license

Cantinarr is open source, released under the AGPL-3.0 license. In plain terms the code is out in the open, so you're free to run it and change it to fit what you need.

Portainer app templates

Zooming out, this whole page comes from a Portainer app template: a short recipe telling Portainer how to set Cantinarr up. Add the template list to Portainer once, then deploying Cantinarr is a click rather than a wall of config.