5G has evolved into a cloud-native disaggregated infrastructure, enabling the concept of modularization in its design and supporting a service-based architecture. As such the concept is not new, except that it has not been applied in the telecommunication world, which has resulted in vendor lockin, limited innovation, and high costs. With modular design at all levels, 5G allowed the telco world to meet the IT world and outstanding innovations followed with the so-called post-5G propositions. The EU SLICES Research Infrastructure (RI) is developing an open, reproducible, distributed post-5G architecture built on top of blueprints aimed to be replicated by researchers, companies, and operators and to evolve in a collaborative manner. In this demo, we will explore the blueprints that allow building a cloud-native 5G core and a split 7.2 radio network, based on open-source software while being fully reproducible. The objective of the demo is not only to show a deployment but to motivate the research community to participate in the collaborative SLICES-RI project and to adopt a reproducible methodology supporting the full research life cycle.