[](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")
The [LinuxServer.io](https://linuxserver.io) team brings you another container release.
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://discord.gg/YWrKVTn) - realtime support / chat with the community and the team.
* [Discourse](https://discourse.linuxserver.io) - post on our community forum.
* [Fleet](https://fleet.linuxserver.io) - an online web interface which displays all of our maintained images.
* [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
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/modmanager: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\> |
| armhf | ❌ | |
## Application Setup
You can specify mods to download via the `DOCKER_MODS` environment variable like any other container, or allow discovery through docker by mounting the docker socket into the container (or configuring a suitable alternative endpoint via DOCKER_HOST).
The Modmanager container will download all needed mods on startup and then check for updates every 6 hours; if you're using docker discovery it will automatically pick up any new mods.
You can then mount your `/modcache` path into any other Linuxserver container and they will pull their mods from there rather than downloading them each time.
If a mod requires additional packages to be installed, each container will still need to download them each time it is recreated.
Note that the Modmanager container itself does not support applying mods *or* custom files/services.
### Security considerations
Mapping `docker.sock` is a potential security liability because docker has root access on the host and any process that has full access to `docker.sock` would also have root access on the host. Docker api has no built-in way to set limitations on access, however, you can use a proxy for the `docker.sock` via a solution like [our docker socket proxy](https://github.com/linuxserver/docker-socket-proxy), which adds the ability to limit access. Then you would just set `DOCKER_HOST=` environment variable to point to the proxy address.
## 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 flaged 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))
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.
| `-e DOCKER_HOST=` | Specify the docker endpoint to use if not using the docker.sock |
| `-v /modcache` | Modmanager mod storage. |
| `-v /var/run/docker.sock:ro` | Mount the host docker socket into the container. |
## Support Info
* Shell access whilst the container is running:
```bash
docker exec -it modmanager /bin/sh
```
* To monitor the logs of the container in realtime:
```bash
docker logs -f modmanager
```
* Container version number:
```bash
docker inspect -f '{{ index .Config.Labels "build_version" }}' modmanager
```
* Image version number:
```bash
docker inspect -f '{{ index .Config.Labels "build_version" }}' lscr.io/linuxserver/modmanager: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:
>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:
