Updated the proostekrant to work properly again.

docker/php/Dockerfile

@@ -0,0 +1,42 @@
+FROM php:8.2-fpm-alpine
+
+# Install dependencies for GD extension
+RUN apk add --no-cache --virtual .build-deps \
+    freetype-dev \
+    libjpeg-turbo-dev \
+    libpng-dev \
+    libwebp-dev \
+    zlib-dev
+
+# Install and enable GD extension with all image format support
+# Note: --with-png and --with-jpeg are now built-in, only need freetype and webp
+RUN docker-php-ext-configure gd \
+    --with-freetype \
+    --with-webp
+
+# Install PHP extensions
+RUN docker-php-ext-install -j$(nproc) \
+    gd \
+    mysqli \
+    pdo \
+    pdo_mysql
+
+# Clean up build dependencies
+RUN apk del .build-deps
+
+# Also install runtime libraries for GD
+RUN apk add --no-cache \
+    freetype \
+    libjpeg-turbo \
+    libpng \
+    libwebp \
+    zlib
+
+# Copy PHP configuration
+COPY docker/php/php.ini /usr/local/etc/php/conf.d/custom.ini
+
+WORKDIR /var/www/html
+
+EXPOSE 9000
+
+CMD ["php-fpm"]