Simple backup of docker-compose with images and data-volumes

backup-compose.sh

#!/bin/sh

if [ "1$1" != "1" ]; then
        cd "$1"
fi

BACKUP_IMAGES="backup/images"
BACKUP_VOLUMES="backup/volumes"

rm -rf "$BACKUP_IMAGES"
rm -rf "$BACKUP_VOLUMES"

mkdir -p "$BACKUP_IMAGES"
mkdir -p "$BACKUP_VOLUMES"

prefix=$(basename "`pwd`" | sed -e 's/_//' -e 's/-//')

echo "Backuping $prefix"
docker-compose stop

for volume in $(docker volume ls |  grep "$prefix"_ | awk '{print $2}'); do
        echo "Backuping volume $volume"
        name=$(echo "$volume" | sed -e "s/^$prefix"_"//")
        docker run --rm  -v `pwd`/"$BACKUP_VOLUMES":/media -v $volume:/mnt:ro busybox tar -czf /media/"$name".tar.gz mnt
done

echo "Backuping images"
for image in $(docker-compose images -q); do
        echo "Backuping image $image"
        docker save -o "$BACKUP_IMAGES"/"$image".tar.gz  "$image" 
done


echo '#!/bin/sh' > "$BACKUP_IMAGES"/tag.sh
docker-compose images | tail -n+3 | awk '{print "docker tag "$4" "$2":"$3}' >> "$BACKUP_IMAGES"/tag.sh
chmod +x "$BACKUP_IMAGES"/tag.sh

echo "Creating restore script"
cat - > restore.sh <<EOF
#!/bin/sh

echo "Importing images"

for image in "$BACKUP_IMAGES"/*.tar.gz; do
        echo "Importing \$image"
        docker load -i "\$image"
done

echo "Tagging"

"$BACKUP_IMAGES"/tag.sh

echo "Restoring"

docker-compose create

echo "Importing data volumes"

prefix=\$(basename "\`pwd\`" | sed -e 's/_//' -e 's/-//')
for file in "$BACKUP_VOLUMES"/*.tar.gz; do
        basefile=\$(basename "\$file")
        name="\$(echo \$basefile | sed -e 's/.tar.gz\$//')"
        volume="\$prefix"_"\$name"
        echo "volume: \$name -> \$volume"
        docker run --rm  -v \`pwd\`/"$BACKUP_VOLUMES":/media:ro -v \$volume:/mnt busybox tar -xzf /media/"\$basefile"
done

EOF

chmod +x restore.sh