diff --git a/jump-box/startup.bash b/jump-box/startup.bash
new file mode 100644
index 0000000..3913a73
--- /dev/null
+++ b/jump-box/startup.bash
@@ -0,0 +1,9 @@
+#!/bin/bash -e
+
+echo "Setting up target user ${TARGET_USER} (uid=${TARGET_UID}, gid=${TARGET_GID})..."
+groupadd --gid "$TARGET_GID" "$TARGET_USER"
+adduser --gid "$TARGET_GID" --uid "$TARGET_UID" "$TARGET_USER"
+chown "$TARGET_USER":"$TARGET_USER" /var/log/container-stdout.log
+
+echo "Ready."
+tail -f /var/log/container-stdout.log