[](https://blog.linuxserver.io "all the things you can do with our containers including How-To guides, opinions and much more!")
[](https://discord.gg/YWrKVTn "realtime support / chat with the community and the team.")
[](https://discourse.linuxserver.io "post on our community forum.")
[](https://fleet.linuxserver.io "an online web interface which displays all of our maintained images.")
[](https://github.com/linuxserver "view the source for all of our repositories.")
[](https://opencollective.com/linuxserver "please consider helping us by either donating or contributing to our budget")
[](https://microbadger.com/images/linuxserver/transmission "Get your own version badge on microbadger.com")
[Transmission](https://www.transmissionbt.com/) is designed for easy, powerful use. Transmission has the features you want from a BitTorrent client: encryption, a web interface, peer exchange, magnet links, DHT, µTP, UPnP and NAT-PMP port forwarding, webseed support, watch directories, tracker editing, global and per-torrent speed limits, and more.
Our images support multiple architectures such as `x86-64`, `arm64` and `armhf`. We utilise the docker manifest for multi-platform awareness. More information is available from docker [here](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md#manifest-list) and our announcement [here](https://blog.linuxserver.io/2019/02/21/the-lsio-pipeline-project/).
Container images are configured using parameters passed at runtime (such as those above). These parameters are separated by a colon and indicate `<external>:<internal>` respectively. For example, `-p 8080:80` would expose port `80` from inside the container to be accessible from the host's IP on port `8080` outside the container.
| `-e TRANSMISSION_WEB_HOME=/combustion-release/` | Specify an alternative UI options are `/combustion-release/`, `/transmission-web-control/`, and `/kettu/` . |
When using volumes (`-v` flags) permissions issues can arise between the host OS and the container, we avoid this issue by allowing you to specify the user `PUID` and group `PGID`.
Webui is on port 9091, the settings.json file in /config has extra settings not available in the webui. Stop the container before editing it or any changes won't be saved.
For users pulling an update and unable to access the webui setting you may need to set "rpc-host-whitelist-enabled": false, in /config/settings.json`
If you choose to use transmission-web-control as your default UI, just note that the origional Web UI will not be available to you despite the button being present.
Use the `USER` and `PASS` variables in docker run/create/compose to set authentication. Do not manually edit the `settings.json` to input user/pass, otherwise transmission cannot be stopped cleanly by the s6 supervisor.
This requires `"blocklist-enabled": true,` to be set. By setting this to true, it is assumed you have also populated `blocklist-url` with a valid block list.
The automatic update is a shell script that downloads a blocklist from the url stored in the settings.json, gunzips it, and restarts the transmission daemon.
[](https://mods.linuxserver.io/?mod=transmission "view available mods for this container.")
We publish various [Docker Mods](https://github.com/linuxserver/docker-mods) to enable additional functionality within the containers. The list of Mods available for this image (if any) can be accessed via the dynamic badge above.
Most of our images are static, versioned, and require an image update and container recreation to update the app inside. With some exceptions (ie. nextcloud, plex), we do not recommend or support updating apps inside the container. Please consult the [Application Setup](#application-setup) section above to see if it is recommended for the image.
Below are the instructions for updating containers:
* Update the image: `docker pull linuxserver/transmission`
* Stop the running container: `docker stop transmission`
* Delete the container: `docker rm transmission`
* Recreate a new container with the same docker create parameters as instructed above (if mapped correctly to a host folder, your `/config` folder and settings will be preserved)
* Start the new container: `docker start transmission`
* You can also remove the old dangling images: `docker image prune`
**Note:** We do not endorse the use of Watchtower as a solution to automated updates of existing Docker containers. In fact we generally discourage automated updates. However, this is a useful tool for one-time manual updates of containers where you have forgotten the original parameters. In the long term, we highly recommend using Docker Compose.
