Add ignition files

ignition/base-install-docker.bu

@@ -0,0 +1,45 @@
+variant: fcos
+version: 1.6.0
+passwd:
+  users:
+    # Add user to docker group
+    - name: core
+      groups:
+        - docker
+
+storage:
+  files:
+    - path: /var/home/core/.bashrc
+      append:
+        - inline: "alias dc='docker compose -f /var/docker/docker-compose.yml'"
+  directories:
+    - path: /var/docker
+      user:
+        name: core
+      group:
+        name: docker
+
+systemd:
+  units:
+    # Install Docker CE
+    - name: rpm-ostree-install-docker-ce.service
+      enabled: true
+      contents: |
+        [Unit]
+        Description=Install Docker CE
+        Wants=network-online.target
+        After=network-online.target
+        Before=zincati.service
+        ConditionPathExists=!/var/lib/%N.stamp
+
+        [Service]
+        Type=oneshot
+        RemainAfterExit=yes
+        ExecStart=/usr/bin/curl --output-dir "/etc/yum.repos.d" --remote-name https://download.docker.com/linux/fedora/docker-ce.repo
+        ExecStart=/usr/bin/rpm-ostree override remove moby-engine containerd runc docker-cli --install docker-ce
+        ExecStart=/usr/bin/touch /var/lib/%N.stamp
+        ExecStart=/usr/bin/systemctl enable docker.service
+        ExecStart=/usr/bin/systemctl --no-block reboot
+
+        [Install]
+        WantedBy=multi-user.target