diff --git a/Dockerfile b/Dockerfile
index 9c81975..dc11af9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,41 +1,42 @@
-FROM amazonlinux:2
+FROM rockylinux:9
 
+# Set arguments for directory paths
 ARG PHP_BUILD_DIR=/var/task
 ARG PHP_CONF_DIR=/etc/php.d
 ARG PHP_EXT_DIR=/usr/lib64/php/modules
 
-RUN yum install -y amazon-linux-extras
-RUN amazon-linux-extras enable php8.2
-RUN amazon-linux-extras install -y php8.2
-RUN yum clean all && \
-    yum -y upgrade && \
-    yum -y install ilibzip-dev libonig-dev putils gcc make \
-    yum -y re2c \
-    yum-utils
+# Enable CRB and install required tools, resolving conflicts
+RUN dnf -y update && \
+    dnf -y install dnf-plugins-core && \
+    dnf config-manager --set-enabled crb && \
+    dnf -y install curl --allowerasing && \
+    dnf -y install dnf-utils wget tar gcc make libxml2-devel \
+                   bzip2 bzip2-devel libpng-devel libjpeg-devel \
+                   freetype-devel oniguruma-devel libzip-devel zlib-devel
 
-RUN yum -y install php-cli php-common php-devel && \
-    yum clean all
+# Enable Remi repository for PHP 8.4
+RUN dnf -y install https://rpms.remirepo.net/enterprise/remi-release-9.rpm && \
+    dnf module reset php -y && \
+    dnf module enable php:remi-8.4 -y && \
+    dnf -y install php php-cli php-devel php-pear
 
-#Extension install
-RUN mkdir -p ${PHP_EXT_DIR} && mkdir -p ${PHP_CONF_DIR}
+# Prepare directories for building the PHP extension
+RUN mkdir -p ${PHP_BUILD_DIR}/shadow
 
-#shadow
-RUN mkdir -p ${PHP_BUILD_DIR}
-RUN cd ${PHP_BUILD_DIR} && \
-    mkdir shadow
-COPY shadow.c shadow/
-COPY php_shadow.h shadow/
-COPY shadow_cache.c shadow/
-COPY shadow_cache.h shadow/
-COPY config.m4 shadow/
-COPY shadow_diff.php shadow/
-COPY tests shadow/
-COPY sugarcrm shadow/
-RUN cd shadow && \
+# Copy extension source files
+COPY shadow.c php_shadow.h shadow_cache.c shadow_cache.h config.m4 ${PHP_BUILD_DIR}/shadow/
+COPY tests ${PHP_BUILD_DIR}/shadow/tests/
+COPY shadow_diff.php ${PHP_BUILD_DIR}/shadow/
+COPY sugarcrm ${PHP_BUILD_DIR}/shadow/sugarcrm/
+
+# Build and install the PHP extension
+RUN cd ${PHP_BUILD_DIR}/shadow && \
     phpize && \
     ./configure && \
     make && \
     make install && \
-    echo "extension=${PHP_EXT_DIR}/shadow.so" > ${PHP_CONF_DIR}/shadow.ini
-RUN cd shadow && \
+    echo "extension=shadow.so" > ${PHP_CONF_DIR}/shadow.ini
+
+# Run tests for the PHP extension
+RUN cd ${PHP_BUILD_DIR}/shadow && \
     php run-tests.php --show-diff .