Initial experimental Dockerfile for Syncthing

syncthing/Dockerfile

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+FROM debian:jessie
+
+ENV SYNCTHING_VERSION 0.10.30
+
+RUN apt-get update && apt-get install -y ca-certificates --no-install-recommends && rm -rf /var/lib/apt/lists/*
+
+# gpg: key 00654A3E: public key "Syncthing Release Management <[email protected]>" imported
+RUN gpg --keyserver pool.sks-keyservers.net --recv-keys 37C84554E7E0A261E4F76E1ED26E6ED000654A3E
+
+RUN set -x \
+	&& apt-get update \
+	&& apt-get install -y curl xmlstarlet --no-install-recommends \
+	&& rm -rf /var/lib/apt/lists/* \
+	&& tarball="syncthing-linux-amd64-v${SYNCTHING_VERSION}.tar.gz" \
+	&& curl -SL "https://github.com/syncthing/syncthing/releases/download/v${SYNCTHING_VERSION}/"{"$tarball",sha1sum.txt.asc} -O \
+	&& apt-get purge -y --auto-remove curl \
+	&& gpg --verify sha1sum.txt.asc \
+	&& grep -E " ${tarball}\$" sha1sum.txt.asc | sha1sum -c - \
+	&& rm sha1sum.txt.asc \
+	&& tar -xvf "$tarball" --strip-components=1 "$(basename "$tarball" .tar.gz)"/syncthing \
+	&& mv syncthing /usr/local/bin/syncthing \
+	&& rm "$tarball"
+
+EXPOSE 8080 22000 21025/udp
+
+ADD entrypoint.sh /entrypoint.sh
+
+RUN useradd -m syncthing
+VOLUME /home/syncthing
+WORKDIR /home/syncthing
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["syncthing"]

syncthing/entrypoint.sh

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+#!/bin/bash
+set -e
+
+HOME=`eval echo ~syncthing`
+CONFIG_FOLDER="$HOME/.config/syncthing"
+CONFIG_FILE="$CONFIG_FOLDER/config.xml"
+
+if [ ! -f "$CONFIG_FILE" ]; then
+  syncthing -generate="$CONFIG_FOLDER"
+  xmlstarlet ed -L -u "/configuration/gui/address" -v "0.0.0.0:8080" "$CONFIG_FILE"
+fi
+
+chown -R syncthing:syncthing "$HOME"
+
+exec su - syncthing -c syncthing