Setting Up Syncthing with Docker Compose

Introduction to Syncthing

Syncthing is an open-source continuous file synchronization program. It synchronizes files between two or more computers in real time, safely and efficiently.

Docker Compose Configuration for Syncthing

This Docker Compose setup deploys Syncthing in a Docker container, ensuring a secure and isolated environment for file synchronization.

Docker Compose File (docker-compose.yml)

version: "2.1"
services:
  syncthing:
    image: lscr.io/linuxserver/syncthing:latest
    container_name: syncthing
    hostname: syncthing #optional
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Etc/UTC
    volumes:
      - /path/to/appdata/config:/config
      - /path/to/data1:/data1
      - /path/to/data2:/data2
    ports:
      - 8384:8384
      - 22000:22000/tcp
      - 22000:22000/udp
      - 21027:21027/udp
    restart: unless-stopped

Key Components of the Configuration

Environment Variables

PUID=1000 and PGID=1000: Sets user and group IDs for file permissions.
TZ=Etc/UTC: Sets the container's timezone.

Volumes

/path/to/appdata/config:/config: Maps the local config directory to the container's config directory.
/path/to/data1:/data1: Maps the first local data directory to the container.
/path/to/data2:/data2: Maps the second local data directory to the container.

Ports

8384:8384: Web GUI.
22000:22000/tcp and 22000:22000/udp: Device communication.
21027:21027/udp: Local network discovery.

Restart Policy

unless-stopped: Ensures the container restarts automatically unless explicitly stopped.