configure gd --with-png-dir

Author: pehbehbeh

Dockerfile

@@ -38,7 +38,7 @@ RUN apk info \
         xvfb \
         chromium@edge \
         chromium-chromedriver@edge \
-    && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
+    && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-png-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
     && docker-php-ext-install -j$(nproc) \
         gd \
         pdo_mysql \