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#!/bin/bash
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# @todo rethink optional parameter
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# @param $1 [optional] : The path for the backups folder. DEFAULT $HOME/Backups/
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# @see https://www.freedesktop.org/software/systemd/man/machine-id.html
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backup_time = " $( date '+%Y%m%d%H%M%S' ) "
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docker_backups_mount = " $( test -z " $1 " && echo "/Backups/" || echo " / $( basename " $1 " ) / " ) "
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native_backups_mount_prefix = " $( test -z " $1 " && echo " $HOME " || echo " / $( dirname " $1 " ) / " ) "
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native_backups_mount = " $native_backups_mount_prefix $docker_backups_mount "
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for docker_container_name in $( docker ps --format '{{.Names}}' ) ;
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do
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echo " stop container: $docker_container_name " && docker stop " $docker_container_name "
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for source_path in $( docker inspect --format '{{ range .Mounts }}{{ if eq .Type "volume" }}{{ println .Destination }}{{ end }}{{ end }}' " $docker_container_name " ) ;
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do
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repository_name = " $( basename -s .git ` git config --get remote.origin.url` ) " ;
machine_id = " $( sha256sum /etc/machine-id | head -c 64) " ;
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backup_repository_folder = " $docker_backups_mount $machine_id / $repository_name / " ;
destination_path = " $backup_repository_folder " " latest/ $docker_container_name $source_path " ;
log_path = " $backup_repository_folder " "log.txt" ;
backup_dir_path = " $backup_repository_folder " " diffs/ $backup_time / $docker_container_name $source_path " ;
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if [ -d " $native_backups_mount_prefix $destination_path " ]
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then
echo " backup: $source_path "
else
echo " first backup: $source_path "
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mkdir -vp " $native_backups_mount_prefix $destination_path " ;
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mkdir -vp " $native_backups_mount_prefix $backup_dir_path " ;
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fi
docker run --rm --volumes-from " $docker_container_name " -v " $native_backups_mount : $docker_backups_mount " "kevinveenbirkenbach/alpine-rsync" sh -c "
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rsync -abvv --delete --delete-excluded --log-file= $log_path --backup-dir= $backup_dir_path '$source_path/' $destination_path " ;
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done
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echo " start container: $docker_container_name " && docker start " $docker_container_name "
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done