Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires rudra/docs dev-master -> satisfiable by rudra/docs[dev-master]. - rudra/docs dev-master requires rudra/container dev-master -> satisfiable by rudra/container[dev-master] from composer repo (https://repo.packagist.org) but rudra/container is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance.

Process completed with exit code 2.