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RPi-Syncthing

This is a Docker image targeting Raspberry Pi hosts containing Syncthing which describes itself:

Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized. Your data is your data alone and you deserve to choose where it is stored, if it is shared with some third party and how it's transmitted over the Internet.

What's the current latest version?

Contributions are welcome.

Pull

docker pull funkyfuture/rpi-syncthing

Build

git clone https://github.com/funkyfuture/docker-rpi-syncthing
make -C docker-rpi-syncthing

Run

Here's an example configuration that is suited to manage an instance with docker-compose:

version: '2'

services:
  client:
    image: funkyfuture/rpi-syncthing
    restart: unless-stopped
    ports:
      - "8384:8384"
      - "22000:22000"
      - "21027:21027/udp"
    volumes:
      - ./config:/syncthing/config
      - ./data:/syncthing/data
    environment:
      - GUI_USERNAME=ziggy
      - GUI_PASSWORD_PLAIN=stardust

For those eager to quickly test this image:

docker run --rm --network=host funkyfuture/rpi-syncthing

Configuration

The numeric user and group id of the user running the client are set with the environment variables UID and GID. Both default to 1000. This affects the ownership of the stored data in /syncthing and $CONFIG_DIR.

You can pass these environment variables to configure the client:

  • CONFIG_DIR (default: /syncthing/config)
  • DEBUG can be set to on
  • GUI_ADDRESS (default: [::]:8384)
  • GUI_APIKEY
  • GUI_ENABLED (default: true)
  • GUI_PASSWORD_PLAIN
  • GUI_PASSWORD_BCRYPT (takes precedence over ..._PLAIN)
  • GUI_TLS (default: false)
  • GUI_USERNAME

Further customization

To further customize the configuration you can provide your own $CONFIG_DIR/config.xml to the container. Note that the configuration values resp. their defaults above will be applied on it (but this is going to be more sensible at some point).

You may also add a /pre-launch.sh that will be run (by sourceing) after the configuration values have been applied. For convenient xml-manipulation you can use xmlstarlet, see start.sh for examples and a wrapper function. The user context at this point is still root, the designated user context to run syncthing is available as $UID, $GID, $USER_NAME and $GROUP_NAME.

Resources

Docker Hub repository

https://registry.hub.docker.com/u/funkyfuture/rpi-syncthing/

Source repository

https://github.com/funkyfuture/docker-rpi-syncthing

Syncthing configuration docs

https://docs.syncthing.net/users/config.html

xmlstarlet documentation

http://xmlstar.sourceforge.net/doc/UG/

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Docker image with Syncthing for Raspberry Pis

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