cpp setup

.github/workflows/build&test@arcrunner.yml

@@ -16,17 +16,9 @@ jobs:
         runner: [arc-runner-set]
 
     runs-on: ${{ matrix.runner }}
+    container: docker.io/rust:latest
 
     steps:
-    - name: Install 
-      run: |
-        sudo apt update && sudo apt upgrade -y && sudo apt install -y git curl pkg-config libssl-dev gcc-10 g++-10 && \
-        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 --slave /usr/bin/g++ g++ /usr/bin/g++-10 --slave /usr/bin/gcov gcov /usr/bin/gcov-10 && \
-        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 90 --slave /usr/bin/g++ g++ /usr/bin/g++-9 --slave /usr/bin/gcov gcov /usr/bin/gcov-9
-    - name: Setup | Rust
-      uses: ATiltedTree/setup-rust@v1
-      with:
-        rust-version: stable
     - name: Setup | CMake
       uses: jwlawson/actions-setup-cmake@v1.13
       with: