diff --git a/scripts/Dockerfile-ubuntu_18_04 b/scripts/Dockerfile-ubuntu_18_04
index 1f873991..beb47c36 100644
--- a/scripts/Dockerfile-ubuntu_18_04
+++ b/scripts/Dockerfile-ubuntu_18_04
@@ -52,8 +52,13 @@ RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 --slave /
 RUN wget https://developer.download.nvidia.com/compute/cuda/11.4.2/local_installers/cuda_11.4.2_470.57.02_linux.run --progress=bar:force:noscroll -q --show-progress -O /root/cuda.run && chmod a+x /root/cuda.run
 RUN /root/cuda.run --silent --toolkit --toolkitpath=/usr --no-opengl-libs --no-man-page --no-drm && rm /root/cuda.run
 
-RUN apt-get install -y gawk bison && \
-    mkdir glibc-src && cd glibc-src && \
+RUN apt-get update -y && \
+    apt-get install -y \
+        gawk \
+        bison \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/* \
+    && mkdir glibc-src && cd glibc-src && \
     wget http://ftp.gnu.org/gnu/libc/glibc-2.31.tar.gz && \
     tar -xvzf glibc-2.31.tar.gz && \
     mkdir build && cd build && \