diff --git a/Dockerfile b/Dockerfile
index 5e9c86d..8aeb81a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,11 @@
-FROM ubuntu:jammy-20230804
+# syntax=docker/dockerfile:1.4
+ARG UBUNTU_VERSION="jammy-20231211.1"
+
+FROM ubuntu:${UBUNTU_VERSION}
 
 RUN apt-get update && apt-get install -yqq --no-install-recommends \
-      curl bash git ca-certificates
+      curl bash git ca-certificates \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
 
 RUN curl https://get.trunk.io -fsSL | bash -s -- -y