docs: image, sitemap and redirect fixes (#1263)

* docs: fix image linkes for cdn

* docs: use relative top level redirect

* docs: generate sitemap under /docs/

docs/.vuepress/config.js

@@ -9,6 +9,7 @@ module.exports = {
     },
     sitemap: {
       hostname: "https://www.pomerium.io",
+      outFile: "docs/sitemap.xml"
     },
     "@vuepress/google-analytics": {
       ga: "UA-129872447-2",
@@ -19,7 +20,7 @@ module.exports = {
   },
   themeConfig: {
     home: false,
-    logo: "/logo-long-civez.png",
+    logo: "/img/logo-long-civez.png",
     repo: "pomerium/pomerium",
     editLinks: true,
     docsDir: "docs",

docs/docs/readme.md

@@ -33,7 +33,7 @@ Pomerium can be used to:
 
 Pomerium sits between end users and services requiring strong authentication. After verifying identity with your identity provider (IdP), Pomerium uses a configurable policy to decide how to route your user's request and if they are authorized to access the service.
 
-<img alt="pomerium architecture diagram" src="/pomerium-system-context.svg" width="65%">
+<img alt="pomerium architecture diagram" src="./img/pomerium-system-context.svg" width="65%">
 
 ### Component Level
 
@@ -64,7 +64,7 @@ In production deployments, it is recommended that you deploy each component sepa
 
 In test deployments, all four components may run from a single binary and configuration.
 
-<img alt="pomerium architecture diagram" src="/pomerium-container-context.svg" width="65%">
+<img alt="pomerium architecture diagram" src="./img/pomerium-container-context.svg" width="65%">
 
 ### Authentication Flow
 
@@ -73,7 +73,7 @@ Pomerium's internal and external component interactions during full authenticati
 After initial authentication to provide a session token, only the authorization check interactions occur.
 
 <a href="/pomerium-auth-flow.svg">
-<img alt="pomerium architecture diagram" src="/pomerium-auth-flow.svg">
+<img alt="pomerium architecture diagram" src="./img/pomerium-auth-flow.svg">
 </a>
 
 ## In action

docs/readme.md

@@ -1,2 +1,2 @@
 <!-- Simply redirect back to docs! -->
-<Redirect to="https://www.pomerium.com/docs/" />
+<Redirect to="/docs/" />