move config to a file, update readme with compile/run instructions

README.md

@@ -22,20 +22,22 @@ proxy server from sources they actually trust.
 
 ## Running the server
 
-You can compile a release by running the following:
+You can compile and run a release by executing the following.
 
 ```
-export REPLACE_OS_VARS=true
-export MIX_ENV=prod 
-mix release --env=prod
-```
+$ mix deps.get
 
-Then to run the server, you can supply your own DNS server via the DOUGH_DNS
-environment variable.
+$ MIX_ENV=prod mix release --env=prod
 
+$ cp _build/prod/rel/dough/etc/dough.toml ~/.config
+
+$ _build/prod/rel/dough/bin/dough foreground
 ```
-DOUGH_DNS="1.1.1.1" _build/prod/rel/dough/bin/dough foreground
-```
+
+Feel free to edit the config file at `~/.config/dough.toml` to configure it to
+use your favourite DNS provider as the proxy. By default, it's configured to
+use [OpenNIC](https://www.opennic.org/) DNS servers for maximum freedom (as in
+birds).
 
 ## Configure Firefox
 

config/dev.exs

@@ -0,0 +1 @@
+use Mix.Config

config/prod.exs

@@ -1,4 +1,4 @@
 use Mix.Config
 
-config :dough,
-  dns_server: "${DOUGH_DNS}"
+#config :dough,
+#  dns_server: "${DOUGH_DNS}"

mix.exs

@@ -26,7 +26,8 @@ defmodule Dough.MixProject do
       {:plug, "~> 1.5"},
       {:dns, "~> 2.1.0"},
       {:cachex, "~> 3.0.3"},
-      {:distillery, "~> 2.0"}
+      {:distillery, "~> 2.0"},
+      {:toml, "~> 0.3.0"}
     ]
   end
 end

mix.lock

@@ -10,5 +10,6 @@
   "plug": {:hex, :plug, "1.6.2", "e06a7bd2bb6de5145da0dd950070110dce88045351224bd98e84edfdaaf5ffee", [:mix], [{:cowboy, "~> 1.0.1 or ~> 1.1 or ~> 2.4", [hex: :cowboy, repo: "hexpm", optional: true]}, {:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}], "hexpm"},
   "ranch": {:hex, :ranch, "1.5.0", "f04166f456790fee2ac1aa05a02745cc75783c2bfb26d39faf6aefc9a3d3a58a", [:rebar3], [], "hexpm"},
   "socket": {:hex, :socket, "0.3.13", "98a2ab20ce17f95fb512c5cadddba32b57273e0d2dba2d2e5f976c5969d0c632", [:mix], [], "hexpm"},
+  "toml": {:hex, :toml, "0.3.0", "069ca29f5458cb209c84b8839bf533304904d07eadcb90b6dd4dd4517772e458", [:mix], [], "hexpm"},
   "unsafe": {:hex, :unsafe, "1.0.0", "7c21742cd05380c7875546b023481d3a26f52df8e5dfedcb9f958f322baae305", [:mix], [], "hexpm"},
 }

rel/config.exs

@@ -47,6 +47,12 @@ end
 
 release :dough do
   set version: current_version(:dough)
+  set config_providers: [
+    {Toml.Provider, [path: "${HOME}/.config/dough.toml"]}
+  ]
+  set overlays: [
+    {:copy, "rel/config/dough.toml", "etc/dough.toml"}
+  ]
   set applications: [
     :runtime_tools, :socket
   ]

rel/config/dough.toml

@@ -0,0 +1,2 @@
+[dough]
+dns_server = "37.235.1.174"