Add GUARDIAN_SECRET_KEY_BASE variables for production

config/docker.env

 SECRET_KEY_BASE=REALLY_LONG_SECRET
+GUARDIAN_SECRET_KEY_BASE=REALLY_LONG_SECRET
 DATABASE_HOST=db
 DATABASE_URL=ecto://postgres:postgres@db/postgres
 PORT=4000

config/releases.exs

@@ -23,6 +23,13 @@ secret_key_base =
     You can generate one by calling: mix phx.gen.secret
     """
 
+guardian_secret_key_base =
+System.get_env("GUARDIAN_SECRET_KEY_BASE") ||
+  raise """
+  environment variable GUARDIAN_SECRET_KEY_BASE is missing.
+  You can generate one by calling: mix guardian.gen.secret
+  """
+
 config :diskuy, DiskuyWeb.Endpoint,
   http: [
     port: String.to_integer(System.get_env("PORT") || "4000"),
@@ -30,6 +37,11 @@ config :diskuy, DiskuyWeb.Endpoint,
   ],
   secret_key_base: secret_key_base
 
+
+config :diskuy, DiskuyWeb.Auth.Guardian,
+  issuer: "diskuy",
+  secret_key: guardian_secret_key_base
+
 # ## Using releases (Elixir v1.9+)
 #
 # If you are doing OTP releases, you need to instruct Phoenix