Document an example setup of CoreOS

1-coreos/1-prepare-ignition-files/example.bu

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+variant: fcos
+version: 1.4.0
+passwd:
+  users:
+    - name: core
+      ssh_authorized_keys:
+        - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJwojmm5GUDQTt/ic1w3yf5c0fyiPqhy8D9Y4qMVljEA othrayte@gmail.com

1-coreos/1-prepare-ignition-files/example.ign

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+{
+  "ignition": {
+    "version": "3.3.0"
+  },
+  "passwd": {
+    "users": [
+      {
+        "name": "core",
+        "sshAuthorizedKeys": [
+          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJwojmm5GUDQTt/ic1w3yf5c0fyiPqhy8D9Y4qMVljEA othrayte@gmail.com"
+        ]
+      }
+    ]
+  }
+}

1-coreos/1-prepare-ignition-files/readme.md

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+1. Ensure butane is installed `dnf install butane`
+2. Compile butane files into ignition files
+    `butane --pretty --strict example.bu --output example.ign`

1-coreos/2-install-coreos/readme.md

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+1. Download CoreOS "Live DVD" iso from https://fedoraproject.org/coreos/download?stream=stable#baremetal
+    For archival and for use in unraid these are stored at smb://betelgeuse-seven-unraid.local/isos
+2. Boot ISO
+    On unraid
+    1. **VMS > ADD VM > Linux/CoreOS**
+    2. Set **OS Install ISO** to downloaded iso
+    3. Choose **Primary vDisk Size**, say 10GB (they recommend 8GiB min but 8GB is less than that)
+3. Connect
+    On unraid: **VMS > (VM Icon, left click) > VM Console(VNC)**
+4. Identify disk to install to
+    `sudo vdisk -l`, on unraid this was /dev/vda
+5. Host the ignition file for the installer to see
+    Run `python3 -m http.server 8080` (from the folder with the ignition files)
+6. Install CoreOS
+    1. Get the OS on disk for the first time
+        `sudo coreos-installer install /dev/vda --insecure-ignition --ignition-url http://192.168.1.115:8080/example.ign`
+    2. Reboot to injest ignition file and provision
+        `sudo reboot`
+        ssh should now work with the user's ssh keys from ignition file