Update local Hugo development target

- mount /tmp as tmpfs
- configure Hugo to use /tmp for all caches
- configure Hugo to render into /tmp

config.toml

@@ -33,6 +33,23 @@ enableGitInfo = true
 # Hindi is disabled because it's currently in development.
 disableLanguages = ["hi", "no"]
 
+[caches]
+ [caches.assets]
+  dir = ":cacheDir/_gen"
+  maxAge = -1
+ [caches.getcsv]
+  dir = ":cacheDir/:project"
+  maxAge = "60s"
+ [caches.getjson]
+  dir = ":cacheDir/:project"
+  maxAge = "60s"
+ [caches.images]
+  dir = ":cacheDir/_images"
+  maxAge = -1
+ [caches.modules]
+  dir = ":cacheDir/modules"
+  maxAge = -1
+
 [markup]
  [markup.goldmark]
    [markup.goldmark.extensions]