[PairDrop](https://github.com/schlagmichdoch/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.
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/).
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.
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.
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](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.
| `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](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#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). |
| `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](https://github.com/schlagmichdoch/PairDrop/blob/master/docs/host-your-own.md#debug-mode). Do not use in production! |
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.
[](https://mods.linuxserver.io/?mod=pairdrop "view available mods for this container.") [](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.
docker inspect -f '{{ index .Config.Labels "build_version" }}' pairdrop
```
* Image version number:
```bash
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](#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 pairdrop
```
* Update containers:
* All containers:
```bash
docker-compose up -d
```
* Single container:
```bash
docker-compose up -d pairdrop
```
* You can also remove the old dangling images:
```bash
docker image prune
```
### Via Docker Run
* Update the image:
```bash
docker pull lscr.io/linuxserver/pairdrop:latest
```
* Stop the running container:
```bash
docker stop pairdrop
```
* Delete the container:
```bash
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:
```bash
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:
```bash
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).
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:
