fix

base-images/nginx-php-fpm-main/Dockerfile

@@ -187,6 +187,7 @@ RUN echo @testing http://nl.alpinelinux.org/alpine/edge/testing >> /etc/apk/repo
     ca-certificates \
     dialog \
     autoconf \
+    g++ \
     make \
     openssl-dev \
     libressl-dev \