platforms file

Crosscompiling

{
  "Platforms": {
    "Some crosscompile image": {
      "enabled": true,
      "codename": "<codename>",
      "docker_dir": "<directory with Dockerfile>",
      "docker_image": "<result docker image name>",
      "docker_build_options": {
        "image_from": "<source docker image name>",
        "image_prepare_script": "<exec this script while building image>",
        "arch": "<arch name>",
        "toolchain": "<toolchain package name>",
        "triplet": "<multiarch name>"
      },
      "cmake_toolchain": "<path to CMake toolchain file>",
      "ppa_filters": ["<package name part to use in wildcard copy>"]
    }
  }
}

Debian codenames

Debian arch names

Debian multiarch names

You can add any values in docker_build_options object, all these values passed to docker on building