Add server-directive to don't cache the index.html. This might hopefully fix...

Add server-directive to don't cache the index.html. This might hopefully fix the problems user's had after the testcenter was updated.

https://github.com/iqb-berlin/testcenter-frontend/issues/327

docker/Dockerfile

@@ -31,6 +31,7 @@ CMD ng serve --disableHostCheck --host 0.0.0.0
 FROM nginx:1.22.0-alpine as prod
 
 COPY --from=dev /app/dist /usr/share/nginx/html
+COPY ./docker/nginx.conf /etc/nginx/conf.d/default.conf
 
 EXPOSE 80
 

docker/nginx.conf

+server {
+    listen 80;
+    listen [::]:80;
+    server_name localhost;
+
+    location / {
+        root /usr/share/nginx/html;
+        index index.html index.htm;
+    }
+
+    location /index.html {
+        root /usr/share/nginx/html;
+        add_header Cache-Control no-store;
+        expires 0;
+    }
+
+    error_page 500 502 503 504  /50x.html;
+    location = /50x.html {
+        root /usr/share/nginx/html;
+    }
+}

src/app/app.interceptor.ts

+/* eslint-disable no-console */
 import { Injectable } from '@angular/core';
 import { Router, RouterState } from '@angular/router';
 import {
@@ -93,6 +94,7 @@ export class AuthInterceptor implements HttpInterceptor {
                   break;
 
                 default:
+                  console.log(httpError);
                   label = 'Unbekanntes Verbindungsproblem';
               }
               if (!ignoreError) {