The bundled Dockerfile seems to be broken. It copies the repository to /spectre and sets working directory to /spectre/cli, which does not exist and Docker creates it empty. The build then fails, because CMakeLists.txt is in /spectre, not /spectre/cli.
The bundled Dockerfile seems to be broken. It copies the repository to /spectre and sets working directory to /spectre/cli, which does not exist and Docker creates it empty. The build then fails, because CMakeLists.txt is in /spectre, not /spectre/cli.