diff --git a/Dockerfile b/Dockerfile
index 07d3671..c7d6e7d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,8 @@
     DEBCONF_NONINTERACTIVE_SEEN=true \
     LANG=C.UTF-8 \
     LANGUAGE=$LANG \
-    LOG_DIR='/root/tempest'
+    LOG_DIR='/root/tempest' \
+    OS_TEST_TIMEOUT=700
 SHELL ["/bin/bash", "-o", "pipefail", "-xec"]
 USER root
 ADD data /var/lib/
diff --git a/bin/run_tempest.sh b/bin/run_tempest.sh
index 51c7548..be79fbf 100755
--- a/bin/run_tempest.sh
+++ b/bin/run_tempest.sh
@@ -25,8 +25,6 @@
 
 cp /var/lib/tempest/skiplists/*.list $LOG_DIR/env
 
-echo "OS_TEST_TIMEOUT=700" >> /root/tempest/env/.testr.conf
-
 tempest run $ARGS --blacklist-file skip.list | tee -a ${log}
 
 if [[ "$ARGS" =~ '-r ' || "$ARGS" =~ '--regex' || "$ARGS" =~ '-s' || "$ARGS" =~ '--smoke' || "$ARGS" =~ '--blacklist-file' || "$ARGS" =~ '-w' || "$ARGS" == '' ]]; then