add backup

backup.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+if [ "$(id -u)" != "0" ]; then
+    echo "This script must be run as root."
+    echo "Use the command 'sudo su -' (include the trailing hypen) and try again"
+    exit 1
+fi
+
+(return 2>/dev/null) && sourced=1 || sourced=0
+
+if [ $sourced != 1 ]; then
+    echo "You forgot the leading '.' followed by a space!"
+    echo "Try this format: . ./backup.sh"
+    exit 1
+fi
+
+if [ -z ${BACKUP_PROVIDER+x} ]; then
+    echo "Set BACKUP_PROVIDER environmental variable and try again."
+    exit 1
+elif [ ${BACKUP_PROVIDER="Dropbox"} ]; then
+    btcpay-down.sh
+    tar -cvzf $PWD/dropbox-script/backup.tar.gz --exclude='/var/lib/docker/volumes/generated_bitcoin_datadir/*' /var/lib/docker
+    btcpay-up.sh
+    cd dropbox-script
+    ./dropbox-script && rm backup.tar.gz
+fi