Unable to Serve Mercury Static Files via Nginx

[Mel3530]

Hi,
I have a service in Docker Compose that contains JupyterHub, a VRE that spawns a container for each user's session. In the same service, Mercury is running on port 8050 using this command in thejupyterhub.conffile:

subprocess.Popen(["mercury", "run", "0.0.0.0:8050"])

And in docker-compose.yml:

jupyterhub:
    ...
    ports:
      - 8050:8050 # Mercury
      - 8888:80

Now I can access Mercury in the browser by navigating to http://localhost:8050 due to the mapping done in the Compose file. However, I want to serve Mercury through NGINX, and I have set it up like this:

map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

server {
  listen 0.0.0.0:80;
  resolver 127.0.0.11 valid=30s;
  resolver_timeout 10s;

  location / {
    proxy_set_header Host $http_host;
  }

  location /webapp/ {                   
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      proxy_redirect off;
      proxy_pass http://jupyterhub:8050/;
  }

  location /webapp/static/ {
    proxy_pass http://jupyterhub:8050/static/; 
  }

  location /hub/ {
    proxy_pass http://jupyterhub/;
    ...
    # websocket headers 
    ...
  }

  # location /webapp {
  #   try_files $uri @proxy_webapp;
  # }
  
  # location @proxy_webapp {
  #   proxy_set_header Host $http_host;
  #   proxy_redirect off;
  #   proxy_pass http://jupyterhub:8050;
  # }
  

  # location ^/static/ {  
  #   include /etc/nginx/mime.types;  
  #   autoindex on;    
  #   root   /etc/nginx/html/static/;    
  # }    
  
  # location ^/static/ {  
  #   alias /usr/local/share/jupyterhub/static/;  
  #   include /etc/nginx/mime.types;  
  #   autoindex on;    
  #   # root   /etc/nginx/html/static/;    
  # }    
...
}

The commented-out locations are previous attempts to solve the issue. As you can see in the nginx.conf, I tried to serve Mercury at the URL http://localhost/webapp/. However, I encounter a 404 error because it cannot find some static files:

2024/09/20 10:56:26 [error] 28#28: *213 open() "/etc/nginx/html/static/jupyter-syntax.css" failed (2: No such file or directory), client: 10.58.60.101, server: , request: "GET /static/jupyter-syntax.css HTTP/1.1", host: "localhost", referrer: "http://localhost/webapp/"
10.58.60.101 - - [20/Sep/2024:10:56:26 +0000] "GET /static/jupyter-syntax.css HTTP/1.1" 404 555 "http://localhost/webapp/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0" "-"
2024/09/20 10:56:26 [error] 28#28: *215 open() "/etc/nginx/html/static/jupyter-additional.css" failed (2: No such file or directory), client: 10.58.60.101, server: , request: "GET /static/jupyter-additional.css HTTP/1.1", host: "localhost", referrer: "http://localhost/webapp/"
10.58.60.101 - - [20/Sep/2024:10:56:26 +0000] "GET /static/jupyter-additional.css HTTP/1.1" 404 555 "http://localhost/webapp/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0" "-"
2024/09/20 10:56:26 [error] 28#28: *213 open() "/etc/nginx/html/static/jupyter-theme-light.css" failed (2: No such file or directory), client: 10.58.60.101, server: , request: "GET /static/jupyter-theme-light.css HTTP/1.1", host: "localhost", referrer: "http://localhost/webapp/"
10.58.60.101 - - [20/Sep/2024:10:56:26 +0000] "GET /static/jupyter-theme-light.css HTTP/1.1" 404 555 "http://localhost/webapp/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0" "-"
2024/09/20 10:56:26 [error] 28#28: *216 open() "/etc/nginx/html/static/css/2.c6cf5ff9.chunk.css" failed (2: No such file or directory), client: 10.58.60.101, server: , request: "GET /static/css/2.c6cf5ff9.chunk.css HTTP/1.1", host: "localhost", referrer: "http://localhost/webapp/"
10.58.60.101 - - [20/Sep/2024:10:56:26 +0000] "GET /static/css/2.c6cf5ff9.chunk.css HTTP/1.1" 404 555 "http://localhost/webapp/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0" "-"
10.58.60.101 - - [20/Sep/2024:10:56:26 +0000] "GET /static/css/main.9848f1b3.chunk.css HTTP/1.1" 404 555 "http://localhost/webapp/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0" "-"

I would greatly appreciate any assistance in identifying what isn't working.