The invention relates to a computer-implemented method for starting up a container instance on a guest computer (H), wherein a runtime environment (L) provided on the guest computer is set up and / or is configured for executing at least one application operated in the container instance, characterized by the following method steps: a) Before starting up the container instance, called the
workload container instance (WC), provide and start a container instance initializing the
workload container instance, called the
init container instance (IC); b) The
init container instance creates a
namespace (C) with privileges configured for the
workload container instance, which is to be assigned to the workload container instance, wherein the
namespace to be assigned is created from at least a part of the
namespace existing on the guest computer and is returned to the runtime environment as a reference;and c) assigning the generated namespace to the workload container instance and starting the workload container instance through the runtime environment.;