message: don't try to install g++-4.8 for groovy and focal
diff: @@ -20,6 +20,8 @@ build_linux:gcc5:
  build_linux:gcc10:
  image: "ubuntu:groovy"
  stage: build
  + before_script:
  + - apt-get update -qq && apt-get install -qq -y make g++
  script:
  - g++ --version
  - make -j
  @@ -27,6 +29,8 @@ build_linux:gcc10:
  build_linux:gcc9:
  image: "ubuntu:focal"
  stage: build
  + before_script:
  + - apt-get update -qq && apt-get install -qq -y make g++
  script:
  - g++ --version
  - make -j
  