🔧 tweak xdebug version selection

Author: willpower232

Dockerfile

@@ -3,7 +3,7 @@ FROM php:$PHP_VERSION-cli-alpine
 
 RUN apk add git zip unzip autoconf make g++
 
-RUN if [ -z "${PHP_VERSION##7\.1*}" ]; then \
+RUN if [ -z "${PHP_VERSION##7\.*}" ]; then \
     pecl install xdebug-2.9.8 && docker-php-ext-enable xdebug; \
 else \
     pecl install xdebug && docker-php-ext-enable xdebug; \