Add docker-auto-update

Signed-off-by: Tommy <contact@tommytran.io>

README.md

@@ -1,8 +1,8 @@
 # Fedora-CoreOS-Ignition
 Ignition configurations for Fedora CoreOS<br />
 
-# Notes
+## Notes
 These configurations are tailored for Metropolis.nexus environment:
 - Firewalling is handled by Proxmox (not the individual VMs)
 - DNSSEC validation is done by either OPNsense or a central VM dedicated to running the DNS resolver
-- Podman will be used for deployment, not Docker
+- The `docker-auto-update@.timer` in `/etc/systemd/system` can be enabled to have automatic updates for your containers created by Docker Compose.

x86.yml

@@ -46,8 +46,11 @@ systemd:
         ExecStart=/usr/sbin/setsebool -P virt_use_nfs off
         ExecStart=/usr/sbin/setsebool -P virt_use_samba off
         ExecStart=/usr/bin/systemctl start gvisor-auto-update.service
-        ExecStart=/usr/bin/rpm-ostree install hardened_malloc qemu-guest-agent tuned
+        ExecStart=/usr/bin/rpm-ostree override remove containerd docker-cli moby-engine runc systemd-resolved
+        ExecStart=/usr/bin/rpm-ostree install docker-ce docker-compose-plugin hardened_malloc qemu-guest-agent tuned
         ExecStart=/usr/bin/sed -i 's/\s+nullok//g' /etc/pam.d/system-auth
+        ExecStart=/usr/bin/systemctl disable --now systemd-resolved
+        ExecStart=/usr/bin/rm /etc/resolv.conf
         ExecStart=/usr/bin/touch /var/lib/%N.stamp
         ExecStart=/usr/bin/systemctl --no-block reboot
 
@@ -144,6 +147,13 @@ storage:
       contents:
         source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/systemd/coredump.conf.d/disable.conf
 
+    - path: /etc/systemd/system/docker-auto-update@.service
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/refs/heads/main/etc/systemd/system/docker-auto-update%40.service
+    - path: /etc/systemd/system/docker-auto-update@.timer
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/refs/heads/main/etc/systemd/system/docker-auto-update%40.timer
+
     - path: /etc/systemd/system/gvisor-auto-update.service
       contents:
         source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/systemd/system/gvisor-auto-update.service
@@ -174,7 +184,9 @@ storage:
     - path: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:secureblue:hardened_malloc.repo
       contents:
         source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/yum.repos.d/_copr:copr.fedorainfracloud.org:secureblue:hardened_malloc.repo
-      overwrite: true
+    - path: /etc/yum.repos.d/docker-ce.repo
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/refs/heads/main/etc/yum.repos.d/docker-ce.repo
 
     - path: /etc/zincati/config.d/51-rollout-wariness.toml
       contents: