feat: Rotate Github App Token outside of Atlantis commands (#3208)

Co-authored-by: nitrocode <7775707+nitrocode@users.noreply.github.com>
Co-authored-by: PePe Amengual <jose.amengual@gmail.com>

docker-compose.yml

@@ -7,9 +7,11 @@ services:
         - 4040:4040
         environment:
             # https://dashboard.ngrok.com/get-started/your-authtoken
-            NGROK_AUTH: REPLACE-WITH-YOUR-TOKEN
+            # NGROK_AUTH: REPLACE-WITH-YOUR-TOKEN // set this in atlantis.env
             NGROK_PROTOCOL: http
             NGROK_PORT: atlantis:4141
+        env_file:
+            - ./atlantis.env
         depends_on:
         - atlantis
     redis: