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rsync/Dockerfile

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+                                                                                                      
+FROM alpine:latest
+
+RUN apk add --no-cache --virtual .run-deps rsync openssh tzdata curl ca-certificates flock bash && rm -rf /var/cache/apk/* 
+COPY docker-entrypoint.sh /            
+COPY litestream /usr/local/bin/litestream
+RUN  chmod +x /docker-entrypoint.sh
+RUN  chmod +x /usr/local/bin/litestream
+
+
+ENTRYPOINT ["/docker-entrypoint.sh"]                                                                                       
+CMD ["bash"]           

rsync/README.md

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+[![Build Status](http://droneci.service.dc1.consul/api/badges/sstent/rsync/status.svg)](http://droneci.service.dc1.consul/sstent/rsync)
+Tue Sep 7 13:57:20 EDT 2021

rsync/docker-entrypoint.sh

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+#!/bin/bash
+
+################################################################################
+# INIT
+################################################################################
+
+# mkdir -p /root/.ssh
+# > /root/.ssh/authorized_keys
+# chmod go-rwx /root/.ssh/authorized_keys
+# sed -i "s/#PasswordAuthentication yes/PasswordAuthentication no/g" /etc/ssh/sshd_config
+# sed -i 's/root:!/root:*/' /etc/shadow
+
+# Provide SSH_AUTH_KEY_* via environment variable
+for item in `env`; do
+   case "$item" in
+       SSH_AUTH_KEY*)
+            ENVVAR=`echo $item | cut -d \= -f 1`
+            printenv $ENVVAR >> /root/.ssh/authorized_keys
+            ;;
+   esac
+done
+
+# Provide CRON_TASK_* via environment variable
+> /etc/crontabs/root
+for item in `env`; do
+   case "$item" in
+       CRON_TASK*)
+            ENVVAR=`echo $item | cut -d \= -f 1`
+            printenv $ENVVAR >> /etc/crontabs/root
+            echo "root" > /etc/crontabs/cron.update
+            ;;
+   esac
+done
+
+# Generate host SSH keys
+# if [ ! -e /etc/ssh/ssh_host_rsa_key.pub ]; then
+#   ssh-keygen -A
+# fi
+
+# Generate root SSH key
+# if [ ! -e /root/.ssh/id_rsa.pub ]; then
+#   ssh-keygen -q -N "" -f /root/.ssh/id_rsa
+# fi
+
+################################################################################
+# START as SERVER
+################################################################################
+
+# if [ "$1" == "server" ]; then
+#   AUTH=`cat /root/.ssh/authorized_keys`
+#   if [ -z "$AUTH" ]; then
+#     echo "=================================================================================="
+#     echo "ERROR: No SSH_AUTH_KEY provided, you'll not be able to connect to this container. "
+#     echo "=================================================================================="
+#     exit 1
+#   fi
+
+#   SSH_PARAMS="-D -e -p ${SSH_PORT:-22} $SSH_PARAMS"
+#   echo "================================================================================"
+#   echo "Running: /usr/sbin/sshd $SSH_PARAMS                                             "
+#   echo "================================================================================"
+
+#   exec /usr/sbin/sshd -D $SSH_PARAMS
+# fi
+
+# echo "Please add this ssh key to your server /home/user/.ssh/authorized_keys        "
+# echo "================================================================================"
+# echo "`cat /root/.ssh/id_rsa.pub`"
+# echo "================================================================================"
+
+################################################################################
+# START as CLIENT via crontab
+################################################################################
+
+if [ "$1" == "client" ]; then
+  exec /usr/sbin/crond -f
+fi
+
+if [ "$NOMAD_TASK_NAME" == "init" ]; then
+  echo "Starting RSYNC"
+  flock -x /locks/${NOMAD_GROUP_NAME}_rsync.lock rsync -avv --exclude=Backups --exclude='*.db*' --exclude='*.db' --exclude='*db-litestream' --exclude='generations' /configbackup/ /config/ --delete-before --delete-excluded
+  echo "Ensure no DBs"
+  rm -rf /config/*.db*
+  rm -rf /config/database.sqlite
+  
+
+  echo "Starting DB Restore"
+  /usr/local/bin/litestream restore -config /local/litestream.yml /config/${DB_NAME}
+  chown ${PUID:-1000}:${PGID:-1000} /config/*.db* 
+    if [ -n "$DBCHMOD" ]; then 
+      chmod ${DBCHMOD} /config/${DB_NAME:${NOMAD_GROUP_NAME}}.db; 
+    fi
+  exit 0
+fi
+
+if [ "$NOMAD_TASK_NAME" == "finalsync" ]; then
+  echo "Starting RSYNC"
+  flock -x /locks/${NOMAD_GROUP_NAME}_rsync.lock rsync -avv --exclude=Backups --exclude='*.db*' --exclude='*.db' --exclude='*db-litestream' --exclude='generations' /config/ /configbackup/ 
+  exit 0
+fi
+
+if [ "$NOMAD_TASK_NAME" == "db-sync" ]; then
+  echo "Starting DBsync: sleep"
+  #give time for app to datart properly
+  sleep 1m
+  echo "Starting DBsync"
+  exec flock -x /configbackup/${NOMAD_GROUP_NAME}_litesync.lock /usr/local/bin/litestream replicate -config /local/litestream.yml
+  exit 0
+fi
+
+
+
+
+################################################################################
+# Anything else
+################################################################################
+exec "$@"