diff --git a/meta/classes-recipe/image-tools-extension.bbclass b/meta/classes-recipe/image-tools-extension.bbclass
index ab616b7e..5e8a8719 100644
--- a/meta/classes-recipe/image-tools-extension.bbclass
+++ b/meta/classes-recipe/image-tools-extension.bbclass
@@ -49,14 +49,17 @@ imager_run() {
 
         E="${@ isar_export_proxies(d)}"
         deb_dl_dir_import ${schroot_dir} ${distro}
+        if [ ! -z "${IMAGER_SCHROOT_CMD}" ]; then ${IMAGER_SCHROOT_CMD}; fi
         ${SCRIPTSDIR}/lockrun.py -r -f "${REPO_ISAR_DIR}/isar.lock" -s <<EOAPT
         schroot -r -c ${session_id} -d / -u root -- sh -c " \
             apt-get update \
                 -o Dir::Etc::SourceList='sources.list.d/isar-apt.list' \
+                ${IMAGER_SCHROOT_UPDATE_OPTS} \
                 -o Dir::Etc::SourceParts='-' \
                 -o APT::Get::List-Cleanup='0'
             apt-get -o Debug::pkgProblemResolver=yes --no-install-recommends -y \
                 --allow-unauthenticated --allow-downgrades --download-only install \
+                ${IMAGER_SCHROOT_INSTALL_OPTS} \
                 ${local_install}"
 EOAPT