diff --git a/scripts/install_external.sh b/scripts/install_external.sh
index ab09e1562f614fb336a3c80988db07597c44b572..3ac99f4535276902dd14f9407a85217067840b79 100644
--- a/scripts/install_external.sh
+++ b/scripts/install_external.sh
@@ -140,15 +140,20 @@ function performPreInstallationTasksForExternalBuild()
 function installPackages()
 {
     if [ "$PLATFORM_NAME" == "$RHEL8" ]; then
-        ACCEPT_EULA=Y dnf -q -y --disableplugin=subscription-manager install \
-            $(getListOfPackagesToInstall)
-
-    elif [ "$PLATFORM_NAME" == "$RHEL7" ]; then
-        ACCEPT_EULA=Y yum -y --nogpgcheck install \
+        ACCEPT_EULA=Y dnf -q -y -v --disableplugin=subscription-manager install \
             $(getListOfPackagesToInstall)
     fi
 }
 
+# Function that removes packages from the container image
+# which are not actually needed.
+# 
+function removeUnnecessaryPackages()
+{
+    dnf remove -y -v \
+        glibc-devel
+}
+
 # Function that performs post-installation tasks
 # common across build environments.
 #
@@ -181,6 +186,8 @@ function performCommonPostInstallationTasks
     # Remove files from /tmp.
     #
     rm -rf /tmp/*
+
+    removeUnnecessaryPackages
 }
 
 # Function that drives the installation of packages