Install docker zip and gd.

Dockerfile

@@ -1,6 +1,18 @@
 FROM php:7.2-apache-buster
 RUN docker-php-ext-install mysqli
 
+RUN apt-get update -y && apt-get install -y libwebp-dev libjpeg62-turbo-dev libpng-dev libxpm-dev libfreetype6-dev zlib1g-dev libzip-dev
+
+RUN docker-php-ext-install zip
+
+RUN docker-php-ext-configure gd --with-gd --with-webp-dir --with-jpeg-dir \
+    --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir \
+    --enable-gd-native-ttf
+
+RUN docker-php-ext-install gd
+
 VOLUME /var/www/html/media
 
-COPY . /var/www/html
+COPY . /var/www/html
+
+RUN chown -R www-data:www-data /var/www/html