diff --git a/devops/docker_release/Dockerfile b/devops/docker_release/Dockerfile
index 5cb142e..61b2346 100644
--- a/devops/docker_release/Dockerfile
+++ b/devops/docker_release/Dockerfile
@@ -3,7 +3,12 @@ FROM php:cli
 COPY ./phpunuhi.phar /usr/local/bin/phpunuhi
 COPY ./run.sh /run.sh
 
-RUN chmod +x /usr/local/bin/phpunuhi
+RUN chmod +x /usr/local/bin/phpunuhi \
+    && echo "memory_limit=-1" > /usr/local/etc/php/conf.d/memory-limit.ini \
+    && apt-get update && apt-get install -y libicu-dev \
+    && docker-php-ext-install intl \
+    && rm -rf /var/lib/apt/lists/*
+
 
 WORKDIR /app