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title
pairdrop

linuxserver/pairdrop

PairDrop is a sublime alternative to AirDrop that works on all platforms. Send images, documents or text via peer to peer connection to devices in the same local network/Wi-Fi or to paired devices.

Supported Architectures

We utilise the docker manifest for multi-platform awareness. More information is available from docker here and our announcement here.

Simply pulling lscr.io/linuxserver/pairdrop: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

Web UI is accessible at http://SERVERIP:PORT. It is strongly recommended to run PairDrop via a reverse proxy, served over HTTPS, if you are making it publicly available. In this configuration you must ensure that the X-Forwarded-For header is being set correctly, otherwise all clients will be mutually visible.

Most proxies will set this header automatically but may require additional configuration if you are using something like Cloudflare Proxy.

Custom STUN/TURN Servers

To specify custom STUN/TURN servers for PairDrop clients to use, create a JSON config file in a mounted path and use the RTC_CONFIG environment variable to point to it.

You can use https://raw.githubusercontent.com/schlagmichdoch/PairDrop/master/rtc_config_example.json as a starting point.

Note on Websocket fallback

Enabling WS_FALLBACK provides a fallback if the peer to peer WebRTC connection is not available to the client.

This is especially useful if you connect to your instance via a VPN as most VPN services block WebRTC completely in order to hide your real IP address.

Warning: All traffic sent between devices using this fallback is routed through the server and therefor not peer to peer! Traffic routed via this fallback is readable by the server and uses the server's bandwidth.

Usage

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

docker-compose (recommended, click here for more info)

---
version: "2.1"
services:
  pairdrop:
    image: lscr.io/linuxserver/pairdrop:latest
    container_name: pairdrop
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Etc/UTC
      - RATE_LIMIT=false #optional
      - WS_FALLBACK=false #optional
      - RTC_CONFIG= #optional
      - DEBUG_MODE=false #optional
    ports:
      - 3000:3000
    restart: unless-stopped

docker cli (click here for more info)

docker run -d \
  --name=pairdrop \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -e RATE_LIMIT=false `#optional` \
  -e WS_FALLBACK=false `#optional` \
  -e RTC_CONFIG= `#optional` \
  -e DEBUG_MODE=false `#optional` \
  -p 3000:3000 \
  --restart unless-stopped \
  lscr.io/linuxserver/pairdrop: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.

Ports (`-p`)

Parameter	Function
`3000`	http gui

Environment Variables (`-e`)

Env	Function
`PUID=1000`	for UserID - see below for explanation
`PGID=1000`	for GroupID - see below for explanation
`TZ=Etc/UTC`	specify a timezone to use, see this list.
`RATE_LIMIT=false`	Set to `true` to limit clients to 100 requests per 5 min
`WS_FALLBACK=false`	Set to `true` to enable websocket fallback if the peer to peer WebRTC connection is not available to the client (see App Setup notes).
`RTC_CONFIG=`	Path to a json file containing custom STUN/TURN config (see App Setup notes)
`DEBUG_MODE=false`	Set to `true` to debug the http server configuration by logging clients IP addresses used by PairDrop to STDOUT. See here for more info. Do not use in production!

Volume Mappings (`-v`)

Volume	Function

Miscellaneous Options

Parameter	Function

Environment variables from files (Docker secrets)

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

As an example:

-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 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:

id your_user

Example output:

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

Docker Mods

We publish various 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:
```
docker exec -it pairdrop /bin/bash
```
To monitor the logs of the container in realtime:
```
docker logs -f pairdrop
```

Container version number:

docker inspect -f '{{ index .Config.Labels "build_version" }}' pairdrop

Image version number:

docker inspect -f '{{ index .Config.Labels "build_version" }}' lscr.io/linuxserver/pairdrop: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 (ie. nextcloud, plex), we do not recommend or support updating apps inside the container. Please consult the 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:
```
docker-compose pull
```
Single image:
```
docker-compose pull pairdrop
```

Update containers:

All containers:
```
docker-compose up -d
```
Single container:
```
docker-compose up -d pairdrop
```

You can also remove the old dangling images:
```
docker image prune
```

Via Docker Run

Update the image:

docker pull lscr.io/linuxserver/pairdrop:latest

Stop the running container:
```
docker stop pairdrop
```
Delete the container:
```
docker rm pairdrop
```
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:
```
docker image prune
```

Via Watchtower auto-updater (only use if you don't remember the original parameters)

Pull the latest image at its tag and replace it with the same env variables in one run:

docker run --rm \
  -v /var/run/docker.sock:/var/run/docker.sock \
  containrrr/watchtower \
  --run-once pairdrop

You can also remove the old dangling images: docker image prune

!!! warning

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](https://docs.linuxserver.io/general/docker-compose).

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:

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

The ARM variants can be built on x86_64 hardware using multiarch/qemu-user-static

docker run --rm --privileged multiarch/qemu-user-static:register --reset

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

Versions

30.05.23: - Rebase to Alpine 3.18.
06.03.23: - Run npm install as non-root user.
20.02.23: - Initial Release.

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