add rsync

rsync/Dockerfile

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+FROM alpine:3.10
+
+MAINTAINER Newnius <newnius.cn@gmail.com>
+
+RUN apk add --no-cache rsync
+
+ADD bootstrap.sh /etc/bootstrap.sh
+
+ENTRYPOINT ["/etc/bootstrap.sh"]

rsync/README.md

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+# Deploy rsync in docker
+
+## Deploy
+
+#### Run as Server
+
+```bash
+docker run \
+	--name rsync \
+	-d \
+	--restart always \
+	--cpus 1.0 \
+	--publish 873:873 \
+	--mount type=bind,src=/etc/localtime,dst=/etc/localtime,readonly \
+	--mount type=bind,src=/data/,dst=/data/ \
+	--mount type=bind,src=/data/rsync/config/,dst=/config/ \
+	newnius/rsync
+```
+
+#### Run as Client
+
+```bash
+docker run \
+	-it \
+	--rm \
+	--cpus 1.0 \
+	--name rsync \
+	--env AUTH_USER=newnius \
+	--env AUTH_PASSWORD=password \
+	--mount type=bind,src=/etc/localtime,dst=/etc/localtime,readonly \
+	--mount type=bind,src=/data/,dst=/data/ \
+	newnius/rsync rsync -avzP --delete --password-file=/etc/rsyncd.secret newnius@192.168.1.101::data/ /data/
+```
+
+

rsync/bootstrap.sh

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+#!/bin/sh
+
+if ! [[ -z "${AUTH_PASSWORD}" ]]; then
+	echo "$AUTH_PASSWORD" > /etc/rsyncd.secret
+	if ! [[ -z "${AUTH_USER}" ]]; then
+		echo "$AUTH_USER:$AUTH_PASSWORD" > /etc/rsyncd.secrets
+		chmod 600 /etc/rsyncd.secrets
+	fi
+fi
+
+if [ -d /config/ ]; then
+	cp /config/rsync* /etc/
+fi
+
+if ! [[ -z $@ ]]; then
+	# use eval because commands likes `key=value command` would cause file not found error when using $@, but this eval will ruin current environment
+	eval $@
+else
+	rsync --daemon --config=/etc/rsyncd.conf
+	while pgrep rsync > /dev/null; do sleep 1; done
+fi