Add FAQ and Known Issues sections

Adds these sections to the k3s docs with some faq questions filled in and one known issue.
This will need to be updated periodically.

content/k3s/latest/en/building/_index.md

@@ -1,6 +1,6 @@
 ---
 title: "Building from Source"
-weight: 10
+weight: 99999
 ---
 
 This section provides information on building k3s from source.

content/k3s/latest/en/faq/_index.md

@@ -0,0 +1,18 @@
+---
+title: FAQ
+weight: 8000
+---
+
+The FAQ is updated periodically and designed to answer the questions our users most frequently ask about k3s.
+
+**Is k3s a suitable replacement for k8s?**
+
+k3s is capable of nearly everything k8s can do. It is just a more lightweight version. See the [main]({{<baseurl>}}/k3s/latest/en/) docs page for more details.
+
+**How can I use my own Ingress instead of Traefik?**
+
+Simply start k3s server with `--no-deploy=traefik` and deploy your ingress.
+
+**Does k3s support Windows?**
+
+At this time k3s does not natively support Windows, however we are open to the idea in the future.

content/k3s/latest/en/known-issues/_index.md

@@ -0,0 +1,13 @@
+---
+title: Known Issues
+weight: 9000
+---
+The Known Issues are updated periodically and designed to inform you about any issues that may not be immediately addressed in the next upcoming release.
+
+**Snap Docker**
+
+If you plan to use k3s with docker, Docker installed via a snap package is not recommended as it has been known to cause issues running k3s.
+
+**Iptables version issue?**
+
+There was an issue with an iptables version or something - what is the nature of the issue and where is the GH issue for this? Need to look into.