variant_new.sh

#!/usr/bin/env bash

# terminate on errors
set -xe

# define as docker compose var or default ""
WP_BACKUP_URL=${WP_BACKUP_URL:-}

#is empty
function func_0 {
    echo 'First start'

    # download backup from backup url
    function wget_0 {
        wget -qO- "$WP_BACKUP_URL" | tar zxC /var/www
    }

    # copy wp-content from Wordpress src to directory
    function wget_1 {
        echo 'Setting up wp-content directory'
        cp -r /usr/src/wordpress/* /var/www/
    }
    
    # check if BACKUP_URL exists by downloading the first byte
    [[ $(wget -S --spider $1  2>&1 | grep 'HTTP/1.1 200 OK') ]]
    echo `wget_$?`

    # set owner to nobody
    chown -R nobody:nogroup /var/www
    # generate wordpress secrets
    wget https://api.wordpress.org/secret-key/1.1/salt/ -O ->> /usr/src/wordpress/wp-secrets.php
}

# is not empty
function func_1 {
    echo 'Start'
}

# is there a file?
function check {
  ls $2 2>/dev/null | grep $1 | wc -l
}

# check, is there a file?
echo `func_$(check index.php /var/www/wp-content/)`

# execute CMD[]
exec "$@"