Agfdhyk

I use GitLab CI to build my C++ project inside a docker image. I also use conan as a package manager for this project. Everything runs well but I would like to keep conan cache to avoid downloading (or even building) external libs on every build. I tried the following:

.cpp-build:

  stage: build

  variables:

    CONAN_USER_HOME: "${CI_PROJECT_DIR}/conan-home"



  before_script:

    - mkdir -p build

    - conan search "*"



  after_script:

    - conan search "*"



  cache:

    paths:

      - conan-home

      - build

    key: "${CI_BUILD_NAME}"



cpp-gcc-build:

  extends: .cpp-build

  image: conanio/gcc8

  script:

    - cd build

    - conan install --build=missing ../ci_test/cpp/

    - cmake ../ci_test/cpp/

    - make

  artifacts:

    paths:

      - build/bin/cpp_unit_tests



cpp-gcc-test:

  image: conanio/gcc8

  stage: test

  script:

    - build/bin/cpp_unit_tests

GitLab CI seems to be restoring the conan-home directory content correctly (I tried listing the content in the before script and it seemed OK) but conan does not find any installed package in the before script and always downloads all the dependencies. I do not understand what is missing.