Ci build arm64 docker rel11

.github/workflows/Ubuntu20Dockerfile

@@ -0,0 +1,64 @@
+FROM ubuntu:20.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+ENV TZ=Europe/London
+RUN apt-get update && \
+    apt-get upgrade -y && \
+    apt-get install -y \
+      curl \
+      gcc \
+      g++ \
+      make \
+      htop \
+      jq \
+      ninja-build \
+      tmux \
+      git \
+      wget \
+      patch \
+      python3-minimal \
+      python-is-python3 \
+      libdata-dumper-simple-perl \
+      unzip
+
+RUN apt-get install -y software-properties-common && \
+    apt-get update && \
+    add-apt-repository ppa:ubuntu-toolchain-r/test && \
+    apt-get install -f -y gcc-9 g++-9 && \
+    apt-get install -f -y gcc-10 g++-10 && \
+    echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main' | tee -a /etc/apt/sources.list.d/llvm.list && \
+    echo 'deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main' | tee -a /etc/apt/sources.list.d/llvm.list && \
+    wget -q -O - http://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add - && \
+    apt-get update && \
+    apt-get install -f -y llvm-9 clang-9 && \
+    apt-get install -f -y llvm-10 clang-10 && \
+    apt-get install -f -y llvm-11 clang-11
+
+RUN cd /opt && \
+    wget https://github.com/Kitware/CMake/releases/download/v3.20.0/cmake-3.20.0-linux-aarch64.sh && \
+    /bin/sh cmake-3.20.0-linux-aarch64.sh --skip-license --include-subdir && \
+    ln -s /opt/cmake-3.20.0-linux-aarch64/bin/* /usr/local/bin
+
+RUN ln -s /usr/bin/ninja-build /usr/local/bin/ninja
+
+RUN mkdir /home/github/
+
+RUN mkdir /home/root && cd home/root && \
+    git clone --depth 1 --single-branch --branch release_11x https://github.com/flang-compiler/classic-flang-llvm-project.git classic-flang-llvm-project && \
+    cd classic-flang-llvm-project && \
+    mkdir -p build && cd build && \
+    cmake -DLLVM_TARGETS_TO_BUILD=AArch64 \
+             -DCMAKE_INSTALL_PREFIX=/home/github/usr/local \
+             -DCMAKE_BUILD_TYPE=Release \
+             -DCMAKE_C_COMPILER=/usr/bin/gcc-10 \
+             -DCMAKE_CXX_COMPILER=/usr/bin/g++-10 \
+             -DLLVM_ENABLE_PROJECTS="clang;openmp" \
+             -DLLVM_ENABLE_CLASSIC_FLANG=ON \
+             ../llvm && \
+    make -j`nproc --ignore=1` && \
+    make install && \
+    make clean
+
+RUN useradd github && \
+    chown -R github:github /home/github
+USER github

.github/workflows/build_push_docker_image_Ubuntu20.yml

@@ -0,0 +1,58 @@
+name: Ubuntu20 Dockerfile image
+
+on:
+  push:
+    branches: [ release_11x, release_12x ]
+    paths-include:
+      - '**/.github/workflows/build_push_docker_image_Ubuntu20.yml'
+      - '**/.github/workflows/Ubuntu20Dockerfile.yml'
+
+jobs:
+  docker:
+    runs-on: self-hosted
+    steps:
+      - name: Extract branch name
+        run: echo "::set-output name=branch::${GITHUB_REF#refs/heads/}"
+        id: extract_branch
+
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
+
+      - name: Log in
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          file: .github/workflows/Ubuntu20Dockerfile
+          push: true
+          context: .github/workflows
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new
+          tags: ghcr.io/${{ github.repository_owner }}/ubuntu20-flang-${{ steps.extract_branch.outputs.branch }}:latest
+          platforms: linux/arm64
+
+      # This ugly bit is necessary if you don't want your cache to grow forever
+      # till it hits GitHub's limit of 5GB.
+      # Temp fix
+      # https://github.com/docker/build-push-action/issues/252
+      # https://github.com/moby/buildkit/issues/1896
+      - name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache

.github/workflows/flang-tests.yml

@@ -31,7 +31,7 @@ jobs:
           echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main' | sudo tee -a /etc/apt/sources.list.d/llvm.list
           echo 'deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main'  | sudo tee -a /etc/apt/sources.list.d/llvm.list
           wget -q -O - http://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -
-          sudo apt update
+          sudo apt update -y
           sudo apt install -f -y llvm-${{ matrix.version }} clang-${{ matrix.version}}
 
       - if: matrix.cc == 'gcc' && matrix.version == '10'