Deploy with docker-compose

when i deploy project with docker-compose and make nginx config as github instructions get not found files angular
although make this for domain
map $http_upgrade $connection_upgrade {
default upgrade;
‘’ close;
server {
listen 80;
location / {
proxy_pass http://localhost:8081;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;

I cant access angular files
domain/dashboard → not access angular files