you can use "atomic" command line tool to run whatever you want inside a system container (even without docker daemon)
http://www.projectatomic.io/blog/2018/03/containers-w-skopeo-ostree-oci/ http://www.projectatomic.io/blog/2017/06/creating-system-containers/ On Thu, May 31, 2018 at 3:04 PM arnaud gaboury <arnaud.gabo...@gmail.com> wrote: > > In order to create a Kubernetes cluster, I want to downgrade docker to > docker-ce-17.03. > > I uninstalled successfully current docker version with some dependencies with > the following command: > > ------------------------------ > # rpm-ostree override remove cockpit-docker docker docker-common > ------------------------------ > > Now i want to install two rpm files for docker: > > ------------------------------- > # rpm-ostree install docker-ce-17.03.2.ce-1.el7.centos.x86_64.rpm > docker-ce-selinux-17.03.2.ce-1.el7.centos.noarch.rpm > ------------------------------ > > The above command returned: > > ----------- > Resolving dependencies... Forbidden base package replacements: > selinux-policy-targeted 3.14.1-29.fc28 -> 3.14.1-30.fc28 (updates) > selinux-policy 3.14.1-29.fc28 -> 3.14.1-30.fc28 (updates) > failed > error: Some base packages would be replaced > -------------------- > > Googling, it seems this is a common issue, but I didn't find any solution. > How can I solve this issue and install docker-ce & dependencies? > > Regards.