add nginx conf for homepage

nginx/Dockerfile

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+FROM nginx:latest
+
+RUN rm /etc/nginx/conf.d/default.conf
+COPY nginx.conf /etc/nginx/conf.d

nginx/nginx.conf

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+upstream fetwebsite {
+    server django-homepage:8000;
+}
+
+upstream etherpadwebsite {
+    server etherpad:9001;
+}
+
+server {
+    listen 80;
+
+    # server_name localhost;
+
+    # Logging
+    error_log /var/log/nginx/error.log;
+    access_log /var/log/nginx/access.log;
+
+    # Handles all other requests
+    location / {
+        # Forward requests to Django application
+        proxy_pass http://fetwebsite;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header Host $host;
+        proxy_redirect off;
+    }
+
+    location /files {
+        alias /usr/src/app/files/;
+    }
+
+    # location /files/uploads/finance {
+    #     auth_request /auth;
+
+    #     # error_page 401 = @error401;
+    # }
+
+    # location = /auth {
+    #     proxy_pass http://fetwebsite/auth/login/;
+    #     proxy_pass_request_body off;
+    #     proxy_set_header Content-Length "";
+    #     proxy_set_header X-Original-URI $request_uri;
+    # }
+
+    # location @error401 {
+    #     set $query '';
+    #     if ($request_uri ~* "[^\?]+\?(.*)$") {
+    #         set $query $1;
+    #     }
+
+    #     return 302 /login/?next=$scheme://$http_host$http_port$request_uri;
+    # }
+
+    location /etherpad {
+        rewrite /etherpad/(.*) /$1 break;
+        rewrite ^/etherpad$ /etherpad/ permanent;
+        proxy_pass http://etherpadwebsite;
+        proxy_redirect / /etherpad/;
+        
+        proxy_set_header Host $host;
+        proxy_buffering off;
+
+        # Header weiterleiten
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Port $server_port;
+        proxy_set_header X-Forwarded-Host $host;
+    }
+
+}