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[![linuxserver.io](https://raw.githubusercontent.com/linuxserver/docker-templates/master/linuxserver.io/img/linuxserver_medium.png)](https://linuxserver.io)

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The [LinuxServer.io](https://linuxserver.io) team brings you another container release featuring:

* regular and timely application updates
* easy user mappings (PGID, PUID)
* custom base image with s6 overlay
* weekly base OS updates with common layers across the entire LinuxServer.io ecosystem to minimise space usage, down time and bandwidth
* regular security updates

Find us at:

* [Blog](https://blog.linuxserver.io) - all the things you can do with our containers including How-To guides, opinions and much more!
* [Discord](https://linuxserver.io/discord) - realtime support / chat with the community and the team.
* [Discourse](https://discourse.linuxserver.io) - post on our community forum.
* [GitHub](https://github.com/linuxserver) - view the source for all of our repositories.
* [Open Collective](https://opencollective.com/linuxserver) - please consider helping us by either donating or contributing to our budget

# [linuxserver/transmission](https://github.com/linuxserver/docker-transmission)

[![Scarf.io pulls](https://scarf.sh/installs-badge/linuxserver-ci/linuxserver%2Ftransmission?color=94398d&label-color=555555&logo-color=ffffff&style=for-the-badge&package-type=docker)](https://scarf.sh)
[![GitHub Stars](https://img.shields.io/github/stars/linuxserver/docker-transmission.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&logo=github)](https://github.com/linuxserver/docker-transmission)
[![GitHub Release](https://img.shields.io/github/release/linuxserver/docker-transmission.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&logo=github)](https://github.com/linuxserver/docker-transmission/releases)
[![GitHub Package Repository](https://img.shields.io/static/v1.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=linuxserver.io&message=GitHub%20Package&logo=github)](https://github.com/linuxserver/docker-transmission/packages)
[![GitLab Container Registry](https://img.shields.io/static/v1.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=linuxserver.io&message=GitLab%20Registry&logo=gitlab)](https://gitlab.com/linuxserver.io/docker-transmission/container_registry)
[![Quay.io](https://img.shields.io/static/v1.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=linuxserver.io&message=Quay.io)](https://quay.io/repository/linuxserver.io/transmission)
[![Docker Pulls](https://img.shields.io/docker/pulls/linuxserver/transmission.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=pulls&logo=docker)](https://hub.docker.com/r/linuxserver/transmission)
[![Docker Stars](https://img.shields.io/docker/stars/linuxserver/transmission.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=stars&logo=docker)](https://hub.docker.com/r/linuxserver/transmission)
[![Jenkins Build](https://img.shields.io/jenkins/build?labelColor=555555&logoColor=ffffff&style=for-the-badge&jobUrl=https%3A%2F%2Fci.linuxserver.io%2Fjob%2FDocker-Pipeline-Builders%2Fjob%2Fdocker-transmission%2Fjob%2Fmaster%2F&logo=jenkins)](https://ci.linuxserver.io/job/Docker-Pipeline-Builders/job/docker-transmission/job/master/)
[![LSIO CI](https://img.shields.io/badge/dynamic/yaml?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=CI&query=CI&url=https%3A%2F%2Fci-tests.linuxserver.io%2Flinuxserver%2Ftransmission%2Flatest%2Fci-status.yml)](https://ci-tests.linuxserver.io/linuxserver/transmission/latest/index.html)

[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.

[![transmission](https://raw.githubusercontent.com/linuxserver/docker-templates/master/linuxserver.io/img/transmission.png)](https://www.transmissionbt.com/)

## Supported Architectures

We utilise the docker manifest for multi-platform awareness. More information is available from docker [here](https://distribution.github.io/distribution/spec/manifest-v2-2/#manifest-list) and our announcement [here](https://blog.linuxserver.io/2019/02/21/the-lsio-pipeline-project/).

Simply pulling `lscr.io/linuxserver/transmission:latest` should retrieve the correct image for your arch, but you can also pull specific arch images via tags.

The architectures supported by this image are:

| Architecture | Available | Tag |
| :----: | :----: | ---- |
| x86-64 | ✅ | amd64-\<version tag\> |
| arm64 | ✅ | arm64v8-\<version tag\> |

## Application Setup

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.

## Securing the webui with a username/password.

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.

## Updating Blocklists Automatically

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.

The automatic update will run once a day at 3am local server time.

## Using whitelist

Use `WHITELIST` to enable a list of ip as whitelist. This enable support for `rpc-whitelist`. When `WHITELIST` is empty support for whitelist is disabled.

Use `HOST_WHITELIST` to enable an list of dns names as host-whitelist. This enable support for `rpc-host-whitelist`. When `HOST_WHITELIST` is empty support for host-whitelist is disabled.

## Use alternative Transmission torrent ports

Use `PEERPORT` to specify the port(s) Transmission should listen on.  This disables random port selection.  This should be the same as the port mapped in your docker configuration.

## Read-Only Operation

This image can be run with a read-only container filesystem. For details please [read the docs](https://docs.linuxserver.io/misc/read-only/).

## Non-Root Operation

This image can be run with a non-root user. For details please [read the docs](https://docs.linuxserver.io/misc/non-root/).

## Usage

To help you get started creating a container from this image you can either use docker-compose or the docker cli.

>[!NOTE]
>Unless a parameter is flagged as 'optional', it is *mandatory* and a value must be provided.

### docker-compose (recommended, [click here for more info](https://docs.linuxserver.io/general/docker-compose))

```yaml
---
services:
  transmission:
    image: lscr.io/linuxserver/transmission:latest
    container_name: transmission
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Etc/UTC
      - TRANSMISSION_WEB_HOME= #optional
      - USER= #optional
      - PASS= #optional
      - WHITELIST= #optional
      - PEERPORT= #optional
      - HOST_WHITELIST= #optional
    volumes:
      - /path/to/transmission/data:/config
      - /path/to/downloads:/downloads #optional
      - /path/to/watch/folder:/watch #optional
    ports:
      - 9091:9091
      - 51413:51413
      - 51413:51413/udp
    restart: unless-stopped
```

### docker cli ([click here for more info](https://docs.docker.com/engine/reference/commandline/cli/))

```bash
docker run -d \
  --name=transmission \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -e TRANSMISSION_WEB_HOME= `#optional` \
  -e USER= `#optional` \
  -e PASS= `#optional` \
  -e WHITELIST= `#optional` \
  -e PEERPORT= `#optional` \
  -e HOST_WHITELIST= `#optional` \
  -p 9091:9091 \
  -p 51413:51413 \
  -p 51413:51413/udp \
  -v /path/to/transmission/data:/config \
  -v /path/to/downloads:/downloads `#optional` \
  -v /path/to/watch/folder:/watch `#optional` \
  --restart unless-stopped \
  lscr.io/linuxserver/transmission:latest
```

## Parameters

Containers 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.

| Parameter | Function |
| :----: | --- |
| `-p 9091:9091` | WebUI |
| `-p 51413:51413` | Torrent Port TCP |
| `-p 51413:51413/udp` | Torrent Port UDP |
| `-e PUID=1000` | for UserID - see below for explanation |
| `-e PGID=1000` | for GroupID - see below for explanation |
| `-e TZ=Etc/UTC` | specify a timezone to use, see this [list](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List). |
| `-e TRANSMISSION_WEB_HOME=` | Specify the path to an alternative UI folder. |
| `-e USER=` | Specify an optional username for the interface |
| `-e PASS=` | Specify an optional password for the interface |
| `-e WHITELIST=` | Specify an optional list of comma separated ip whitelist. Fills rpc-whitelist setting. |
| `-e PEERPORT=` | Specify an optional port for torrent TCP/UDP connections. Fills peer-port setting. |
| `-e HOST_WHITELIST=` | Specify an optional list of comma separated dns name whitelist. Fills rpc-host-whitelist setting. |
| `-v /config` | Where transmission should store config files and logs. |
| `-v /downloads` | Local path for downloads. |
| `-v /watch` | Watch folder for torrent files. |
| `--read-only=true` | Run container with a read-only filesystem. Please [read the docs](https://docs.linuxserver.io/misc/read-only/). |
| `--user=1000:1000` | Run container with a non-root user. Please [read the docs](https://docs.linuxserver.io/misc/non-root/). |

## Environment variables from files (Docker secrets)

You can set any environment variable from a file by using a special prepend `FILE__`.

As an example:

```bash
-e FILE__MYVAR=/run/secrets/mysecretvariable
```

Will set the environment variable `MYVAR` based on the contents of the `/run/secrets/mysecretvariable` file.

## Umask for running applications

For all of our images we provide the ability to override the default umask settings for services started within the containers using the optional `-e UMASK=022` setting.
Keep in mind umask is not chmod it subtracts from permissions based on it's value it does not add. Please read up [here](https://en.wikipedia.org/wiki/Umask) before asking for support.

## User / Group Identifiers

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`.

Ensure any volume directories on the host are owned by the same user you specify and any permissions issues will vanish like magic.

In this instance `PUID=1000` and `PGID=1000`, to find yours use `id your_user` as below:

```bash
id your_user
```

Example output:

```text
uid=1000(your_user) gid=1000(your_user) groups=1000(your_user)
```

## Docker Mods

[![Docker Mods](https://img.shields.io/badge/dynamic/yaml?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=transmission&query=%24.mods%5B%27transmission%27%5D.mod_count&url=https%3A%2F%2Fraw.githubusercontent.com%2Flinuxserver%2Fdocker-mods%2Fmaster%2Fmod-list.yml)](https://mods.linuxserver.io/?mod=transmission "view available mods for this container.") [![Docker Universal Mods](https://img.shields.io/badge/dynamic/yaml?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=universal&query=%24.mods%5B%27universal%27%5D.mod_count&url=https%3A%2F%2Fraw.githubusercontent.com%2Flinuxserver%2Fdocker-mods%2Fmaster%2Fmod-list.yml)](https://mods.linuxserver.io/?mod=universal "view available universal mods.")

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) as well as universal mods that can be applied to any one of our images can be accessed via the dynamic badges above.

## Support Info

* Shell access whilst the container is running:

```bash
    docker exec -it transmission /bin/bash
    ```

* To monitor the logs of the container in realtime:

```bash
    docker logs -f transmission
    ```

* Container version number:

```bash
    docker inspect -f '{{ index .Config.Labels "build_version" }}' transmission
    ```

* Image version number:

```bash
    docker inspect -f '{{ index .Config.Labels "build_version" }}' lscr.io/linuxserver/transmission:latest
    ```

## Updating Info

Most of our images are static, versioned, and require an image update and container recreation to update the app inside. With some exceptions (noted in the relevant readme.md), 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:

### Via Docker Compose

* Update images:
    * All images:

```bash
        docker-compose pull
        ```

* Single image:

```bash
        docker-compose pull transmission
        ```

* Update containers:
    * All containers:

```bash
        docker-compose up -d
        ```

* Single container:

```bash
        docker-compose up -d transmission
        ```

* You can also remove the old dangling images:

```bash
    docker image prune
    ```

### Via Docker Run

* Update the image:

```bash
    docker pull lscr.io/linuxserver/transmission:latest
    ```

* Stop the running container:

```bash
    docker stop transmission
    ```

* Delete the container:

```bash
    docker rm transmission
    ```

* Recreate a new container with the same docker run parameters as instructed above (if mapped correctly to a host folder, your `/config` folder and settings will be preserved)
* You can also remove the old dangling images:

```bash
    docker image prune
    ```

### Image Update Notifications - Diun (Docker Image Update Notifier)

>[!TIP]
>We recommend [Diun](https://crazymax.dev/diun/) for update notifications. Other tools that automatically update containers unattended are not recommended or supported.

## Building locally

If you want to make local modifications to these images for development purposes or just to customize the logic:

```bash
git clone https://github.com/linuxserver/docker-transmission.git
cd docker-transmission
docker build \
  --no-cache \
  --pull \
  -t lscr.io/linuxserver/transmission:latest .
```

The ARM variants can be built on x86_64 hardware and vice versa using `lscr.io/linuxserver/qemu-static`

```bash
docker run --rm --privileged lscr.io/linuxserver/qemu-static --reset
```

Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64`.

## Versions

* **31.05.26:** - Bind RPC to IPv6 interface by default, fall back to IPv4 if unavailable.
* **29.11.24:** - Fix PEERPORT setting.
* **07.10.23:** - Install unrar from [linuxserver repo](https://github.com/linuxserver/docker-unrar).
* **10.08.23:** - Bump unrar to 6.2.10.
* **10.06.23:** - Bump unrar to 6.2.8, install transmission-extra.
* **25.05.23:** - Deprecate armhf.
* **14.05.23:** - Explicitly install transmission-remote.
* **02.03.23:** - Add cron init to allow user customizable crontabs.
* **08.02.23:** - Rebase to Alpine Edge to get access to most up to date builds of Transmission. Remove bundled 3rd party UI packages.
* **05.01.23:** - Rebase to Alpine 3.17, restore GNU findutils package.
* **02.11.22:** - Rebase to Alpine 3.16, migrate to s6v3.
* **12.08.22:** - Bump unrar to 6.1.7.
* **03.04.22:** - Add Transmissionic as a UI option.
* **21.02.22:** - Build unrar from source, rebase to Alpine 3.15, add symlinks neeeded for TWC. Credit @alexbelgium
* **09.07.21:** - Wait for the transmission-daemon termination after a caught sigterm.
* **06.03.21:** - Add Flood for Transmission as a UI option.
* **23.01.21:** - Rebasing to alpine 3.13.
* **02.11.20:** - Add ca-certificates package to allow connecting to https trackers.
* **02.06.20:** - Rebase to alpine 3.12, update to transmission 3.0, remove python2, add python3.
* **11.05.20:** - Remove unnecessary chmod (remnant of previous change).
* **28.04.20:** - Use transmission-remote to update blocklist.
* **30.03.20:** - Internalize blocklist-update.sh.
* **29.03.20:** - Update auth info in readme.
* **19.12.19:** - Rebasing to alpine 3.11.
* **04.10.19:** - Update package label.
* **21.08.19:** - Add optional user/pass environment variables, fix transmission shut down if user/pass are set.
* **19.07.19:** - Send SIGTERM in blocklist update to properly close pid.
* **28.06.19:** - Rebasing to alpine 3.10.
* **23.03.19:** - Switching to new Base images, shift to arm32v7 tag.
* **22.02.19:** - Rebase to Alpine 3.9, add themes to baseimage, add python and findutils.
* **22.02.19:** - Catch term and clean exit.
* **07.02.19:** - Add pipeline logic and multi arch.
* **15.08.18:** - Rebase to alpine linux 3.8.
* **12.02.18:** - Pull transmission from edge repo.
* **10.01.18:** - Rebase to alpine linux 3.7.
* **25.07.17:** - Add rsync package.
* **27.05.17:** - Rebase to alpine linux 3.6.
* **06.02.17:** - Rebase to alpine linux 3.5.
* **15.01.17:** - Add p7zip, tar, unrar, and unzip packages.
* **16.10.16:** - Blocklist autoupdate with optional authentication.
* **14.10.16:** - Add version layer informationE.
* **23.09.16:** - Add information about securing the webui to README.
* **21.09.16:** - Add curl package.
* **09.09.16:** - Add layer badges to README.
* **28.08.16:** - Add badges to README.
* **09.08.16:** - Rebase to alpine linux.
* **06.12.15:** - Separate mapping for watch folder.
* **16.11.15:** - Initial Release.

docker-transmission

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