initial xdebug additions

Dockerfile

@@ -58,6 +58,7 @@ RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
   && addgroup -S nginx \
   && adduser -D -S -h /var/cache/nginx -s /sbin/nologin -G nginx nginx \
   && apk add --no-cache --virtual .build-deps \
+    autoconf \
     gcc \
     libc-dev \
     make \
@@ -149,6 +150,7 @@ RUN echo @testing http://nl.alpinelinux.org/alpine/edge/testing >> /etc/apk/repo
     openssl-dev \
     ca-certificates \
     dialog \
+    autoconf \
     gcc \
     musl-dev \
     linux-headers \
@@ -168,6 +170,7 @@ RUN echo @testing http://nl.alpinelinux.org/alpine/edge/testing >> /etc/apk/repo
       --with-jpeg-dir=/usr/include/ && \
     #curl iconv session
     docker-php-ext-install pdo_mysql pdo_sqlite mysqli mcrypt gd exif intl xsl json soap dom zip opcache && \
+    pecl install xdebug && \
     docker-php-source delete && \
     mkdir -p /etc/nginx && \
     mkdir -p /var/www/app && \
@@ -181,7 +184,7 @@ RUN echo @testing http://nl.alpinelinux.org/alpine/edge/testing >> /etc/apk/repo
     pip install -U pip && \
     pip install -U certbot && \
     mkdir -p /etc/letsencrypt/webrootauth && \
-    apk del gcc musl-dev linux-headers libffi-dev augeas-dev python-dev
+    apk del gcc musl-dev linux-headers libffi-dev augeas-dev python-dev autoconf
 #    ln -s /usr/bin/php7 /usr/bin/php
 
 ADD conf/supervisord.conf /etc/supervisord.conf