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60 lines
1.9 KiB
Markdown
60 lines
1.9 KiB
Markdown
# Docker Container for Syncthing
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Use the Dockerfile in this repo, or pull the `syncthing/syncthing` image
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from Docker Hub.
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Use the `/var/syncthing` volume to have the synchronized files available on the
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host. You can add more folders and map them as you prefer.
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Note that Syncthing runs as UID 1000 and GID 1000 by default. These may be
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altered with the ``PUID`` and ``PGID`` environment variables.
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## Example Usage
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```
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$ docker pull syncthing/syncthing
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$ docker run -p 8384:8384 -p 22000:22000 \
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-v /wherever/st-sync:/var/syncthing \
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syncthing/syncthing:latest
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```
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## Discovery
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Note that local device discovery will not work with the above command,
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resulting in poor local transfer rates if local device addresses are not
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manually configured.
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To allow local discovery, the docker host network can be used instead:
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```
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$ docker pull syncthing/syncthing
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$ docker run --network=host \
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-v /wherever/st-sync:/var/syncthing \
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syncthing/syncthing:latest
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```
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Be aware that syncthing alone is now in control of what interfaces and ports it
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listens on. You can edit the syncthing configuration to change the defaults if
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there are conflicts.
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## GUI Security
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By default Syncthing inside the Docker image listens on 0.0.0.0:8384 to
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allow GUI connections via the Docker proxy. This is set by the
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`STGUIADDRESS` environment variable in the Dockerfile, as it differs from
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what Syncthing would otherwise use by default. This means you should set up
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authentication in the GUI, like for any other externally reachable Syncthing
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instance. If you do not require the GUI, or you use host networking, you can
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unset the `STGUIADDRESS` variable to have Syncthing fall back to listening
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on 127.0.0.1:
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```
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$ docker pull syncthing/syncthing
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$ docker run -e STGUIADDRESS= \
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-v /wherever/st-sync:/var/syncthing \
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syncthing/syncthing:latest
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```
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With the environment variable unset Syncthing will follow what is set in the
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configuration file / GUI settings dialog.
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