tests: increase PHP memory limit to 512M in Dockerfile (#778)

Co-authored-by: Benoit POLASZEK <[email protected]>

Author: bpolaszek

Dockerfile

@@ -5,4 +5,6 @@ RUN apt-get update && apt-get install -y \
     unzip \
     && rm -rf /var/lib/apt/lists/*
 
+RUN echo "memory_limit = 512M" > /usr/local/etc/php/conf.d/memory-limit.ini
+
 COPY --from=composer:2 /usr/bin/composer /usr/local/bin/composer