Sergey Bugaev
a4a9a6f7c6
Docker doesn't set $container, so it cannot be detected that way. Instead, we check for presence of /.dockerinit, which it creates. Podman does set $container, but some Red Hat images (in particular, Fedora images) override $container to equal "oci". So to correctly detect Podman containers, we check for presence of /run/.containerenv, which is created by Podman and is now the official way to get information about the container from within the container. Fixes https://github.com/systemd/systemd/issues/15393
System and Service Manager
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