[chore] Improvements in docker structure

frontend/Dockerfile

@@ -15,5 +15,3 @@ RUN npm run build
 FROM nginx:stable-alpine3.17-slim
 
 COPY --from=builder /app/dist /usr/share/nginx/html
-
-COPY nginx.conf /etc/nginx/conf.d/default.conf

frontend/nginx.conf

@@ -1,9 +0,0 @@
-server {
- listen 3000;
- 
- location / {
-   root /usr/share/nginx/html/;
-   include /etc/nginx/mime.types;
-   try_files $uri $uri/ /index.html;
- }
-}