MIRANTIS CONTAINER RUNTIME

Software containerization helps ensure applications behave the same way across different environments because the container includes the application, its dependencies, and its configuration. In hybrid cloud setups, this consistency is especially valuable because teams often run workloads across on-prem infrastructure and multiple cloud providers. By standardizing how applications are packaged and run, containerized software simplifies deployment, reduces configuration drift, and supports repeatable releases wherever the workload runs.

A container engineer provides the tools needed to build, run, and manage containers on a host system. Enterprises use container engines to standardize application packaging, improve deployment reliability, and reduce operational overhead. By simplifying how applications move from development to production, a container engine can help teams automate delivery pipelines, reduce environment-related issues, and manage infrastructure more consistently across teams and platforms.

When evaluating Docker container software, organizations should assess security across the full lifecycle. Key considerations include vulnerability scanning, runtime protections, access controls, and update processes. It is also important to evaluate how well the software integrates with orchestration tools, since many security and policy controls are enforced at the orchestration layer. A strong assessment approach includes validating compliance capabilities, operational controls, and how security is maintained across build, registry, and runtime stages.

Security teams strengthen container runtime security by controlling what is allowed to run, limiting access, and continuously monitoring for suspicious behavior. Hardening approaches often include restricting privileges, scanning images before deployment, and applying runtime policies that protect running applications from unauthorized activity. It is also important to validate and secure libraries and dependencies inside container images, since outdated or vulnerable components are common entry points for attackers.

Mirantis Container Runtime implements the Container Runtime Interface (CRI) through cri-dockerd, a Mirantis-maintained adapter that provides secure, standards-compliant communication between Kubernetes and the Docker Engine. This enables organizations to leverage MCR's enterprise security features—including image signing, content trust, and FIPS-validated cryptography—while maintaining full Kubernetes compatibility through actively maintained CRI support.