[Github][CI] Add missing git-clang-format to format-container (llvm#163054)

Author: vbvictor

.github/workflows/build-ci-container-tooling.yml

@@ -72,7 +72,7 @@ jobs:
       - name: Test Container
         run: |
           # Use --pull=never to ensure we are testing the just built image.
-          podman run --pull=never --rm -it ${{ steps.vars.outputs.container-name-format-tag }} /usr/bin/bash -x -c 'cd $HOME && clang-format --version | grep version && black --version | grep black'
+          podman run --pull=never --rm -it ${{ steps.vars.outputs.container-name-format-tag }} /usr/bin/bash -x -c 'cd $HOME && clang-format --version | grep version && git-clang-format -h | grep usage && black --version | grep black'
           podman run --pull=never --rm -it ${{ steps.vars.outputs.container-name-lint-tag }} /usr/bin/bash -x -c 'cd $HOME && clang-tidy --version | grep version && clang-tidy-diff.py -h | grep usage'
 
   push-ci-container:

.github/workflows/containers/github-action-ci-tooling/Dockerfile

@@ -10,7 +10,8 @@ RUN apt-get update && \
     tar -xvJf llvm.tar.xz -C /llvm-extract \
         # Only unpack these tools to save space on Github runner.
         LLVM-${LLVM_VERSION}-Linux-X64/bin/clang-tidy \
-        LLVM-${LLVM_VERSION}-Linux-X64/bin/clang-format && \
+        LLVM-${LLVM_VERSION}-Linux-X64/bin/clang-format \
+        LLVM-${LLVM_VERSION}-Linux-X64/bin/git-clang-format && \
     rm llvm.tar.xz
 
 
@@ -35,7 +36,9 @@ RUN apt-get update && \
 FROM base AS ci-container-code-format
 ARG LLVM_VERSION
 
-COPY --from=llvm-downloader /llvm-extract/LLVM-${LLVM_VERSION}-Linux-X64/bin/clang-format ${LLVM_SYSROOT}/bin/clang-format
+COPY --from=llvm-downloader /llvm-extract/LLVM-${LLVM_VERSION}-Linux-X64/bin/clang-format \
+                            /llvm-extract/LLVM-${LLVM_VERSION}-Linux-X64/bin/git-clang-format \
+                            ${LLVM_SYSROOT}/bin/
 
 ENV PATH=${LLVM_SYSROOT}/bin:${PATH}