implement custom favicon

lib/shift73k_web/endpoint.ex

@@ -21,11 +21,31 @@ defmodule Shift73kWeb.Endpoint do
   #
   # You should set gzip to true if you are running phx.digest
   # when deploying your static files in production.
+  #
+  # file list generated by simple ls -1 assets/static/ - then copy/paste here
+  static_files = ~w(
+    android-chrome-192x192.png
+    android-chrome-512x512.png
+    apple-touch-icon.png
+    browserconfig.xml
+    favicon-16x16.png
+    favicon-32x32.png
+    favicon.ico
+    mstile-144x144.png
+    mstile-150x150.png
+    mstile-310x150.png
+    mstile-310x310.png
+    mstile-70x70.png
+    robots.txt
+    safari-pinned-tab.svg
+    site.webmanifest
+  )
+
   plug(Plug.Static,
     at: "/",
     from: :shift73k,
     gzip: false,
-    only: ~w(css fonts images js favicon.ico robots.txt)
+    only: ~w(css fonts images js) ++ static_files
   )
 
   # Code reloading can be explicitly enabled under the