diff --git a/python3/bin/entrypoint.sh b/python3/bin/entrypoint.sh
index 475df5d..9d338e0 100755
--- a/python3/bin/entrypoint.sh
+++ b/python3/bin/entrypoint.sh
@@ -1,7 +1,4 @@
 #!/usr/bin/env bash
-DEFAULT_UID=10000
-DEFAULT_GID=10000
-
 set -e
 
 if [[ -v DEBUG  ]]
@@ -85,8 +82,15 @@ then
 fi
 
 # set up privilege dropping to user and group
-PRIVDROP=$(create_user_and_group "${RUNAS_UID:-$DEFAULT_UID}" "${RUNAS_GID:-$DEFAULT_GID}")
-echo "Dropping privileges to $($PRIVDROP id -u):$($PRIVDROP id -g)"
+PRIVDROP=
+if [ -n "$RUNAS_UID" ] || [ -n "$RUNAS_GID" ]
+then
+    PRIVDROP=$(create_user_and_group "${RUNAS_UID}" "${RUNAS_GID}")
+    echo "Dropping privileges to $($PRIVDROP id -u):$($PRIVDROP id -g)"
+else
+    echo "ERROR: Please set RUNAS_UID and RUNAS_GID environment variables"
+    exit 1
+fi
 
 # run custom scripts before dropping privileges
 echo "Running custom scripts in /container-init as root"
diff --git a/python3/test.sh b/python3/test.sh
index 4603002..d1c11ee 100755
--- a/python3/test.sh
+++ b/python3/test.sh
@@ -7,14 +7,14 @@ echo "Remove old container"
 docker rm python3
 
 # With RUNAS_UID and RUNAS_GID
-echo
-echo "Run image with env"
-docker run --name python3 --env RUNAS_UID=10001 --env RUNAS_GID=10001 python3:test
+# echo
+# echo "Run image with env"
+# docker run --name python3 --env RUNAS_UID=10000 --env RUNAS_GID=10000 python3:test
 
 # Without RUNAS_UID and RUNAS_GID
-# echo
-# echo "Run without env"
-# docker run --name python3 python3:mve
+echo
+echo "Run without env"
+docker run --name python3 python3:test
 
 echo
 echo "Start container"