A helper script for backup operation on wordpress in docker

do.sh

#!/usr/bin/env bash

usage() {
    echo ""
    echo "Usage: $0 command"
    echo ""
    echo "commands:"
    echo "  -b, --backup  : backup the current data volume of MySQL container"
    echo "  -r, --restore : restore the data volume of MySQL container from a backup"
    echo "  -s, --sync    : sync every local and remote file for whichever is newer"
    echo "  --push        : push local directory to remote directory"
    echo "  --pull        : pull remote directory to local directory"
    echo ""
    exit
}

[[ $# -eq 0 ]] && usage

cmd="$1"
container_mount_dir=/var/lib/mysql
backup_filename=mysqlbackup.tar.gz
mysql_container_name=wordpress_mysql
remote_dir=/home/kylechung/

case $cmd in
    -b|--backup)
        docker-compose stop
        docker run --rm \
            --volumes-from $mysql_container_name \
            -v $(pwd):/backup \
            ubuntu tar zcvf /backup/$backup_filename $container_mount_dir
        docker-compose up -d
        ;;
    -r|--restore)
        docker-compose stop
        docker run --rm \
            --volumes-from $mysql_container_name \
            -v $(pwd):/backup \
            ubuntu bash -c "tar zxvf /backup/$backup_filename"
        docker-compose up -d
        ;;
    -s|--sync)
        rsync -u -a $(pwd) ocean:$remote_dir
        rsync -u -a ocean:$remote_dir $(pwd)
        ;;
    --push)
        rsync -a $(pwd) ocean:$remote_dir
        ;;
    --pull)
        rsync -a ocean:$remote_dir $(pwd)
        ;;
    *)
        echo "Unknown command."
        usage
        exit 1
        ;;
esac