Update .gitignore, README, and Traefik configuration; add new services and environment variables

pangolin/config/traefik/traefik_config.yml

@@ -19,6 +19,20 @@ log:
   level: "INFO"
   format: "common"
 
+accessLog:
+  filePath: "/var/log/traefik/access.log"
+  format: "json"
+  bufferingSize: 100
+  fields:
+    defaultMode: "keep"
+    names:
+      ClientUsername: "drop"
+    headers:
+      defaultMode: "keep"
+      names:
+        Authorization: "drop"
+        Cookie: "drop"
+
 certificatesResolvers:
   letsencrypt:
     acme: