this shouldn't have been in here, anyways

diskimage_builder/elements/base/environment.d/10-base-defaults

@@ -1 +1,2 @@
 export DIB_AVOID_PACKAGES_UPDATE=${DIB_AVOID_PACKAGES_UPDATE:-0}
+export DIB_AVOID_ISCSI=${DIB_AVOID_ISCSI:-0}

diskimage_builder/elements/base/install.d/00-baseline-environment

@@ -7,4 +7,6 @@ fi
 set -eu
 set -o pipefail
 
-install-packages -m base iscsi_package
+if [ ${DIB_AVOID_ISCSI} -eq 0 ]]; then
+  install-packages -m base iscsi_package
+fi

diskimage_builder/elements/yum/bin/install-packages

@@ -134,11 +134,7 @@ if [ -n "$WHITELIST" ]; then
     #
     # [1] https://bugzilla.redhat.com/show_bug.cgi?id=965567
     set -o xtrace
-    if [[ -n ${DIB_YUM_DNF_CONTENTDIR:-''} ]]; then
-      sudo cp /etc/dnf/vars/contentdir /etc/dnf/vars/contentdir.bak
-      echo $DIB_YUM_DNF_CONTENTDIR | sudo tee /etc/dnf/vars/contentdir
-      sudo sed -i -e 's,^mirrorlist,#mirrorlist,' -e 's,^#baseurl,baseurl,' /etc/yum.repos.d/*.repo
-    fi
+
     ${YUM} -v -y $ACTION $EXTRA_ARGS $PKGS
 
     if [ "$ACTION" == "install" ]; then

diskimage_builder/elements/yum/post-install.d/99-reset-yum-conf

@@ -6,7 +6,6 @@ fi
 set -eu
 set -o pipefail
 
-
 if [[ -n ${DIB_YUM_DNF_CONTENTDIR:-''} ]]; then
   sudo mv /etc/dnf/vars/contentdir.bak /etc/dnf/vars/contentdir
   sudo sed -i -e 's,^#mirrorlist,mirrorlist,' -e 's,^baseurl,#baseurl,' /etc/yum.repos.d/*.repo