diff --git a/Dockerfile b/Dockerfile
index fe85fc3..b2cf449 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,7 @@ RUN apt-get update && \
 		bison \
 		build-essential \
 		ca-certificates \
+		ccache \
 		clang-tools \
 		cmake \
 		cppcheck \
@@ -80,3 +81,6 @@ RUN git clone https://git.kernel.org/pub/scm/devel/sparse/sparse.git /sparse &&
 RUN git clone https://repo.or.cz/smatch.git /smatch && \
 	cd /smatch && make
 
+# Install clang
+COPY download-llvm.sh /
+RUN /download-llvm.sh
diff --git a/download-llvm.sh b/download-llvm.sh
new file mode 100755
index 0000000..0fc7571
--- /dev/null
+++ b/download-llvm.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+set -x -e
+
+BASE=llvm-22.1.3-x86_64
+
+cat <<EOF > CHECKSUMS
+87579c9ddc3f4a9d8b0253d3c0c4fe07015b40dced8282924afdf6cbec12ce81  ${BASE}.tar.gz
+EOF
+
+curl -C - -O "https://mirrors.kernel.org/pub/tools/llvm/files/${BASE}.tar.gz"
+sha256sum -c CHECKSUMS
+rm -rf "${BASE}" llvm
+tar xf "${BASE}.tar.gz"
+mkdir -p /opt
+mv "${BASE}" /opt/llvm
+rm -f "${BASE}.tar.gz" CHECKSUMS