[llvm] [Github][CI] Add separate container for code-format premerge job (PR #161083)

[Baranov Victor via llvm-commits]

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@@ -0,0 +1,58 @@
+ARG LLVM_VERSION=21.1.0
+
+FROM docker.io/library/ubuntu:24.04 AS llvm-downloader
+ARG LLVM_VERSION
+
+RUN apt-get update && \
+    apt-get install -y wget xz-utils && \
+    wget --progress=bar:force -O llvm.tar.xz https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VERSION}/LLVM-${LLVM_VERSION}-Linux-X64.tar.xz && \
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vbvictor wrote:

I removed, and It gave 40k-line log spam, but I guess that's fine for us.

https://github.com/llvm/llvm-project/pull/161083