xdebug_enable bash fix

docker/usr/local/bin/xdebug_enable

@@ -21,12 +21,12 @@ h2() {
 
 h1 "Actual environment: ${ENVIRONMENT}"
 
-if [ $ENVIRONMENT != 'production' ]; then
+if [[ $ENVIRONMENT != 'production' ]]; then
 	wget -O phpunit https://phar.phpunit.de/phpunit-9.phar 
 	install phpunit /usr/local/bin
 fi 
 
-if [ $ENVIRONMENT == 'development' ]; then
+if [[ $ENVIRONMENT == 'development' ]]; then
 	h2 "Install xdebug"
 	apk --update --no-cache add autoconf g++ make
 	pecl install -f xdebug