Fix docker building (#13681)

### What problem does this PR solve?

1. Refactor go server log
2. Update docker building, since nginx config should be set according to
the deployment.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

docker/nginx/ragflow.conf.python

@@ -0,0 +1,34 @@
+server {
+    listen 80;
+    server_name _;
+    root /ragflow/web/dist;
+
+    gzip on;
+    gzip_min_length 1k;
+    gzip_comp_level 9;
+    gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png;
+    gzip_vary on;
+    gzip_disable "MSIE [1-6]\.";
+
+    location ~ ^/api/v1/admin {
+        proxy_pass http://localhost:9381;
+        include proxy.conf;
+    }
+
+    location ~ ^/(v1|api) {
+        proxy_pass http://localhost:9380;
+        include proxy.conf;
+    }
+
+
+    location / {
+        index index.html;
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Cache-Control: max-age Expires
+    location ~ ^/static/(css|js|media)/ {
+        expires 10y;
+        access_log off;
+    }
+}