Update Dockerfile-70

fixes memcached extension not installing

php-fpm/Dockerfile-70

@@ -37,11 +37,18 @@ RUN docker-php-ext-install \
 
 # Install Memcached for php 7
 RUN curl -L -o /tmp/memcached.tar.gz "https://github.com/php-memcached-dev/php-memcached/archive/php7.tar.gz" \
-    && mkdir -p /usr/src/php/ext/memcached \
-    && tar -C /usr/src/php/ext/memcached -zxvf /tmp/memcached.tar.gz --strip 1 \
-    && docker-php-ext-configure memcached \
-    && docker-php-ext-install memcached \
-    && rm /tmp/memcached.tar.gz
+    && mkdir -p memcached \
+    && tar -C memcached -zxvf /tmp/memcached.tar.gz --strip 1 \
+    && ( \
+        cd memcached \
+        && phpize \
+        && ./configure \
+        && make -j$(nproc) \
+        && make install \
+    ) \
+    && rm -r memcached \
+    && rm /tmp/memcached.tar.gz \
+    && docker-php-ext-enable memcached
 
 # Install xdebug
 RUN pecl install xdebug \