Use External Port 8080 for GUI

Remove extra nginx configuration for gui container and use default
internal port 8080.

feasibility-portal/gui/docker-compose.yml

@@ -1,11 +1,10 @@
 services:
   dataportal-ui:
     image: ghcr.io/medizininformatik-initiative/feasibility-gui:5.0.0-alpha.1
-    ports:
-    - "80:80"
     restart: unless-stopped
+    ports:
+    - "8080:8080"
     volumes:
-      - ./nginx.conf:/etc/nginx/nginx.conf:ro
       - ./deploy-config.json:/usr/share/nginx/html/assets/config/config.deploy.json
       - ./language/de.json:/usr/share/nginx/html/assets/i18n/de.json
       - ./language/en.json:/usr/share/nginx/html/assets/i18n/en.json

feasibility-portal/proxy/nginx.conf

@@ -91,7 +91,7 @@ add_header                    X-Content-Type-Options nosniff;
         server_name datenportal.localhost;
 
         location / {
-            proxy_pass http://dataportal-ui:80/;
+            proxy_pass http://dataportal-ui:8080/;
             proxy_set_header X-Forwarded-For   $proxy_add_x_forwarded_for;
             proxy_set_header X-Forwarded-Proto $scheme;
             proxy_set_header Host $host;