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LinuxServer-CI
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title: endlessh
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---
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<!-- DO NOT EDIT THIS FILE MANUALLY -->
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<!-- Please read https://github.com/linuxserver/docker-endlessh/blob/main/.github/CONTRIBUTING.md -->
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!!! warning Deprecation warning
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This image is deprecated. We will not offer support for this image and it will not be updated.
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We recommend looking at an alternative implementation such as:
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https://github.com/shizunge/endlessh-go/
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# [linuxserver/endlessh](https://github.com/linuxserver/docker-endlessh)
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[](https://scarf.sh/gateway/linuxserver-ci/docker/linuxserver%2Fendlessh)
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[](https://github.com/linuxserver/docker-endlessh)
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[](https://github.com/linuxserver/docker-endlessh/releases)
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[](https://github.com/linuxserver/docker-endlessh/packages)
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[](https://gitlab.com/linuxserver.io/docker-endlessh/container_registry)
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[](https://quay.io/repository/linuxserver.io/endlessh)
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[](https://hub.docker.com/r/linuxserver/endlessh)
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[](https://hub.docker.com/r/linuxserver/endlessh)
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[](https://ci.linuxserver.io/job/Docker-Pipeline-Builders/job/docker-endlessh/job/main/)
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[](https://ci-tests.linuxserver.io/linuxserver/endlessh/latest/index.html)
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[Endlessh](https://github.com/skeeto/endlessh) is an SSH tarpit that very slowly sends an endless, random SSH banner. It keeps SSH clients locked up for hours or even days at a time. The purpose is to put your real SSH server on another port and then let the script kiddies get stuck in this tarpit instead of bothering a real server.
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[](https://github.com/skeeto/endlessh)
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## Supported Architectures
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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/).
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Simply pulling `lscr.io/linuxserver/endlessh:latest` should retrieve the correct image for your arch, but you can also pull specific arch images via tags.
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The architectures supported by this image are:
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| Architecture | Available | Tag |
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| :----: | :----: | ---- |
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| x86-64 | ✅ | amd64-\<version tag\> |
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| arm64 | ✅ | arm64v8-\<version tag\> |
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| armhf | ❌ | |
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## Application Setup
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The app listens on the port mapped for ssh connections. To log to file, set the environment variable `LOGFILE` to `true` and map a volume for `/config`. The logs will be under `/config/logs/endlessh`.
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## Usage
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To help you get started creating a container from this image you can either use docker-compose or the docker cli.
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### docker-compose (recommended, [click here for more info](https://docs.linuxserver.io/general/docker-compose))
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```yaml
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---
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services:
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endlessh:
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image: lscr.io/linuxserver/endlessh:latest
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container_name: endlessh
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environment:
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- PUID=1000
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- PGID=1000
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- TZ=Etc/UTC
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- MSDELAY=10000 #optional
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- MAXLINES=32 #optional
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- MAXCLIENTS=4096 #optional
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- LOGFILE=false #optional
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- BINDFAMILY= #optional
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volumes:
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- /path/to/endlessh/appdata:/config #optional
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ports:
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- 22:2222
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restart: unless-stopped
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```
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### docker cli ([click here for more info](https://docs.docker.com/engine/reference/commandline/cli/))
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```bash
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docker run -d \
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--name=endlessh \
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-e PUID=1000 \
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-e PGID=1000 \
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-e TZ=Etc/UTC \
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-e MSDELAY=10000 `#optional` \
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-e MAXLINES=32 `#optional` \
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-e MAXCLIENTS=4096 `#optional` \
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-e LOGFILE=false `#optional` \
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-e BINDFAMILY= `#optional` \
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-p 22:2222 \
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-v /path/to/endlessh/appdata:/config `#optional` \
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--restart unless-stopped \
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lscr.io/linuxserver/endlessh:latest
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```
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## Parameters
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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.
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### Ports (`-p`)
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| Parameter | Function |
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| :----: | --- |
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| `2222` | ssh port |
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### Environment Variables (`-e`)
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| Env | Function |
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| :----: | --- |
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| `PUID=1000` | for UserID - see below for explanation |
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| `PGID=1000` | for GroupID - see below for explanation |
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| `TZ=Etc/UTC` | specify a timezone to use, see this [list](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List). |
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| `MSDELAY=10000` | The endless banner is sent one line at a time. This is the delay in milliseconds between individual lines. |
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| `MAXLINES=32` | The length of each line is randomized. This controls the maximum length of each line. Shorter lines may keep clients on for longer if they give up after a certain number of bytes. |
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| `MAXCLIENTS=4096` | Maximum number of connections to accept at a time. Connections beyond this are not immediately rejected, but will wait in the queue. |
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| `LOGFILE=false` | By default, the app logs to container log. If this is set to `true`, the log will be output to file under `/config/logs/endlessh` (`/config` needs to be mapped). |
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| `BINDFAMILY=` | By default, the app binds to IPv4 and IPv6 addresses. Set it to `4` or `6` to bind to IPv4 only or IPv6 only, respectively. Leave blank to bind to both. |
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### Volume Mappings (`-v`)
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| Volume | Function |
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| :----: | --- |
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| `/config` | Required if `LOGFILE` is set to `true`. |
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#### Miscellaneous Options
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| Parameter | Function |
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| :-----: | --- |
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## Environment variables from files (Docker secrets)
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You can set any environment variable from a file by using a special prepend `FILE__`.
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As an example:
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```bash
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-e FILE__MYVAR=/run/secrets/mysecretvariable
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```
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Will set the environment variable `MYVAR` based on the contents of the `/run/secrets/mysecretvariable` file.
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## Umask for running applications
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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.
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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.
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## User / Group Identifiers
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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`.
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Ensure any volume directories on the host are owned by the same user you specify and any permissions issues will vanish like magic.
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In this instance `PUID=1000` and `PGID=1000`, to find yours use `id your_user` as below:
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```bash
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id your_user
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```
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Example output:
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```text
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uid=1000(your_user) gid=1000(your_user) groups=1000(your_user)
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```
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## Docker Mods
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[](https://mods.linuxserver.io/?mod=endlessh "view available mods for this container.") [](https://mods.linuxserver.io/?mod=universal "view available universal mods.")
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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.
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## Support Info
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* Shell access whilst the container is running:
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```bash
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docker exec -it endlessh /bin/bash
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```
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* To monitor the logs of the container in realtime:
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```bash
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docker logs -f endlessh
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```
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* Container version number:
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```bash
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docker inspect -f '{{ index .Config.Labels "build_version" }}' endlessh
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```
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* Image version number:
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```bash
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docker inspect -f '{{ index .Config.Labels "build_version" }}' lscr.io/linuxserver/endlessh:latest
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```
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## Updating Info
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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.
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Below are the instructions for updating containers:
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### Via Docker Compose
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* Update images:
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* All images:
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```bash
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docker-compose pull
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```
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* Single image:
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```bash
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docker-compose pull endlessh
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```
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* Update containers:
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* All containers:
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```bash
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docker-compose up -d
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```
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* Single container:
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```bash
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docker-compose up -d endlessh
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```
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* You can also remove the old dangling images:
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```bash
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docker image prune
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```
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### Via Docker Run
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* Update the image:
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```bash
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docker pull lscr.io/linuxserver/endlessh:latest
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```
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* Stop the running container:
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```bash
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docker stop endlessh
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```
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* Delete the container:
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```bash
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docker rm endlessh
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```
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* 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)
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* You can also remove the old dangling images:
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```bash
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docker image prune
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```
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### Image Update Notifications - Diun (Docker Image Update Notifier)
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!!! tip
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We recommend [Diun](https://crazymax.dev/diun/) for update notifications. Other tools that automatically update containers unattended are not recommended or supported.
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## Building locally
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If you want to make local modifications to these images for development purposes or just to customize the logic:
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```bash
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git clone https://github.com/linuxserver/docker-endlessh.git
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cd docker-endlessh
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docker build \
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--no-cache \
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--pull \
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-t lscr.io/linuxserver/endlessh:latest .
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```
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The ARM variants can be built on x86_64 hardware using `multiarch/qemu-user-static`
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```bash
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docker run --rm --privileged multiarch/qemu-user-static:register --reset
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```
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Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64`.
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## Versions
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* **20.03.24:** - Deprecate image.
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* **12.06.23:** - Rebase to Alpine 3.18, deprecate armhf.
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* **05.03.23:** - Rebase to Alpine 3.17.
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* **23.09.22:** - Migrate to s6v3.
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* **20.07.22:** - Rebase to Alpine 3.16.
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* **16.04.22:** - Rebase to Alpine 3.15.
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* **07.10.21:** - Fix typo on MAXLINES var.
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* **08.06.21:** - Add BINDFAMILY option.
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* **16.04.21:** - Initial Release.
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