Install bzip2

It is apparently required to download GCC dependencies.

Author: Kobzol

src/ci/docker/host-x86_64/x86_64-gnu-llvm-18/Dockerfile

@@ -3,6 +3,7 @@ FROM ubuntu:24.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
+  bzip2 \
   g++ \
   gcc-multilib \
   make \