diff --git a/Dockerfile.sandbox b/Dockerfile.sandbox
index dec3f32d1..7a50d69a9 100644
--- a/Dockerfile.sandbox
+++ b/Dockerfile.sandbox
@@ -13,4 +13,8 @@ RUN apt-get update \
     ripgrep \
   && rm -rf /var/lib/apt/lists/*
 
+RUN useradd -m -s /bin/bash -u 1000 sandbox
+USER sandbox
+WORKDIR /home/sandbox
+
 CMD ["sleep", "infinity"]