#Ironic Metal3 settings for provisioning network
export IRONIC_INTERFACE="eth1"
+EOF
+
+if [[ ! -z "${DOCKER_REGISTRY_MIRRORS+x}" ]]; then
+ cat <<EOF >>user_config.sh
-#Ironic Metal3 setting for IPMI LAN Network
-export IRONIC_IPMI_INTERFACE="eth0"
+#Use a registry mirror for downloading container images
+export DOCKER_REGISTRY_MIRRORS="${DOCKER_REGISTRY_MIRRORS}"
EOF
+fi