Remove depreciated file operator in favor of .

Signed-off-by: Jake Tarren <jake@zensystem.io>

Author: Jake Tarren

docker-entrypoint.sh

@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+    if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"