Add clang

Author: Kobzol

src/ci/docker/host-x86_64/rfl/Dockerfile

@@ -20,6 +20,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   bc \
   llvm-17-tools \
   llvm-17-dev \
+  clang \
   libedit-dev \
   libssl-dev \
   pkg-config \