diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..4c1f4ba
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,15 @@
+FROM ubuntu:latest
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt update \
+    && apt install -y --no-install-recommends \
+        ca-certificates \
+        nodejs \
+        npm \
+    && npm install -g @openai/codex \
+    && apt clean \
+    && rm -rf /var/lib/apt/lists/*
+
+CMD ["codex", "--version"]
+