• This is a bug report
• This is a feature request
• I searched existing issues before opening this one

Expected behavior

DL3040 should not throw a warning if the cache is cleaned by rm'ing the /var/cache/yum folder instead of a dnf clean all.

'rm -rf /var/cache/yum' actually might clean more than a dnf clean, as it will also clean cached data for disabled and orphaned repos. But this statement is based on research of about 3 minutes and should be confirmed by people with more knowledge than me.

Actual behavior

Hadolint warns about a missing clean all for the Dockerfile snippet given below.

Steps to reproduce the behavior

Create dockerfile with the below dnf snippet and run Hadolint against it.

Output of hadolint --version or
docker run --rm hadolint/hadolint hadolint --version or
docker run --rm ghcr.io/hadolint/hadolint hadolint --version:

This is run as a Github action with the ReviewDog Hadolint Action

Hadolint version: 2.8.0

uses reviewdog/action-hadolint@2f36e7ddb63420bac655b14287cb6d6b82dd84e2 

Dockerfile (if relevant)

...
# Update image
RUN dnf update --disablerepo=* --enablerepo=ubi-8-baseos --enablerepo=ubi-8-baseos -y \
  && rm -rf /var/cache/yum \
  && dnf install --disablerepo=* --enablerepo=ubi-8-baseos shadow-utils -y \
  && rm -rf /var/cache/yum
...

Additional environment details (OS, stack version, etc.)