Skip to content

Docker image for syncthing installation for x86 / arm architectures.

License

Notifications You must be signed in to change notification settings

nVentiveUX/docker-syncthing

Repository files navigation

Syncthing Docker image

Build Status

Syncthing Docker image for RaspberryPi / amd64 systems.

Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized.

See Syncthing website for more.

Tested on following archs:

  • x64

Following arch are missing tests:

  • arm32v6
  • armv7

Available image tags

Usage

Run the container manually (select tag according to the target architecture):

{
mkdir -p "${HOME}/Sync";
docker run \
  -d \
  --name syncthing \
  -p 8384:8384/tcp \
  -p 22000:22000/tcp \
  -p 21027:21027/udp \
  -v syncthing_config:/etc/syncthing \
  -v "${HOME}/Sync":/var/lib/syncthing \
  nventiveux/syncthing:latest;
}

Open the administration website with https://localhost:8384/ and connect using admin / admin.

This will make available for syncing all folders within ~/Sync. You may be interested to adapt environment variables SYNCTHING_USER_UID and SYNCTHING_GROUP_GID to match your user UID / GID at the host (verify with id).

Persisting data

Following paths within the container should be persisted:

  • /var/lib/syncthing holds synced content.
  • /etc/syncthing holds the syncthing configuration.

Network ports

  • Default ports:
    • 21027/udp --> Local discovery (see Known issues)
    • 22000/tcp --> Sync protocol
    • 8384/tcp --> Admin interface

Environment variables

You can configure Syncthing injecting following environment variables:

Variable Description Default
SYNCTHING_USER Name of container user syncthing
SYNCTHING_USER_UID Map container user to this UID 1000
SYNCTHING_GROUP Name of container user primary group syncthing
SYNCTHING_GROUP_GID Map container user primary group to this GID 1000
SYNCTHING_ADMIN_USER Admin username admin
SYNCTHING_ADMIN_PASSWORD Admin password admin

Example to set another password for the admin user:

docker run \
  ...
  -e SYNCTHING_ADMIN_PASSWORD="anotherpassword" \
  ...

Known issues

  • Local discovery does not work without --network=host. Need more testing if this can be avoided.

Contribute

Pre-requisites:

  • Python >=3.11
  • Rye
  • make
  • Bash >=4
  • Git >=2.18

Prepare your environment:

make install

Tweak Dockerfile to your convenience.

Note: if you are upgrading Syncthing to a newer version, also sync the config file version !

Commit changes and submit a Pull Request.

Releasing a new version

Bump the version using:

git switch -c release/next
make release version=<VERSION>
git commit -a -m "feat(core): bump syncthing to <VERSION>"
rye run cz bump --changelog <VERSION>
# Open a pull request

References