Something great is happening.. It's time to add RHEL8, 7 to your applications' CI test case.
RHEL8
$ docker run --rm -t registry.access.redhat.com/ubi8 bash -cx "uname -a; cat /etc/os-release" + uname -a Linux b065f4dfb56b 4.4.74-boot2docker #1 SMP Mon Jun 26 18:01:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux + cat /etc/os-release NAME="Red Hat Enterprise Linux" VERSION="8.0 (Ootpa)" ID="rhel" ID_LIKE="fedora" VERSION_ID="8.0" PLATFORM_ID="platform:el8" PRETTY_NAME="Red Hat Enterprise Linux 8.0 (Ootpa)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:redhat:enterprise_linux:8.0:GA" HOME_URL="https://www.redhat.com/" BUG_REPORT_URL="https://bugzilla.redhat.com/" REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 8" REDHAT_BUGZILLA_PRODUCT_VERSION=8.0 REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux" REDHAT_SUPPORT_PRODUCT_VERSION="8.0"
RHEL7
$ docker run --rm -t registry.access.redhat.com/ubi7 bash -cx "uname -a; cat /etc/os-release" + uname -a Linux c3d06b25a4d5 4.4.74-boot2docker #1 SMP Mon Jun 26 18:01:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux + cat /etc/os-release NAME="Red Hat Enterprise Linux Server" VERSION="7.6 (Maipo)" ID="rhel" ID_LIKE="fedora" VARIANT="Server" VARIANT_ID="server" VERSION_ID="7.6" PRETTY_NAME="Red Hat Enterprise Linux Server 7.6 (Maipo)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:redhat:enterprise_linux:7.6:GA:server" HOME_URL="https://www.redhat.com/" BUG_REPORT_URL="https://bugzilla.redhat.com/" REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 7" REDHAT_BUGZILLA_PRODUCT_VERSION=7.6 REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux" REDHAT_SUPPORT_PRODUCT_VERSION="7.6"
Fedora
Fedora has the container repository on DockerHub. But below is a case using the official container repository "registry.fedoraproject.org".
$ docker run --rm -t registry.fedoraproject.org/fedora-minimal:30 bash -cx "uname -a; cat /etc/os-release" + uname -a Linux 6b29b23bd6d0 4.4.74-boot2docker #1 SMP Mon Jun 26 18:01:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux + cat /etc/os-release NAME=Fedora VERSION="30 (Container Image)" ID=fedora VERSION_ID=30 VERSION_CODENAME="" PLATFORM_ID="platform:f30" PRETTY_NAME="Fedora 30 (Container Image)" ANSI_COLOR="0;34" LOGO=fedora-logo-icon CPE_NAME="cpe:/o:fedoraproject:fedora:30" HOME_URL="https://fedoraproject.org/" DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f30/system-administrators-guide/" SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help" BUG_REPORT_URL="https://bugzilla.redhat.com/" REDHAT_BUGZILLA_PRODUCT="Fedora" REDHAT_BUGZILLA_PRODUCT_VERSION=30 REDHAT_SUPPORT_PRODUCT="Fedora" REDHAT_SUPPORT_PRODUCT_VERSION=30 PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy" VARIANT="Container Image" VARIANT_ID=container
You can see Fedora container list here.
This is how to use Fedora's minimal container image. https://fedoramagazine.org/building-smaller-container-images/