'microdnf clean all' missing ID purge_microdnf_package_cache Severity low Family Container Security Tags dockerfile, non-reachable, smaller-size Description Cached package data should be cleaned after installation to reduce image size. Security N/A Examples FROM ubi8:8.7 # issue RUN microdnf install -vy docker-ce zsh HEALTHCHECK CMD curl --fail http://localhost:3000 || exit 1 Mitigation / Fix Add microdnf clean all to Dockerfile: FROM ubi8:8.7 # fixed, no install without cleaning package cache RUN microdnf install -vy docker-ce zsh && microdnf clean all HEALTHCHECK CMD curl --fail http://localhost:3000 || exit 1