[devcontainers] Refactor Nginx configuration for serving static files

Simplify the Nginx setup by removing the elements-nginx service and directly serving static files from the main Nginx container. Updated volume mounts and configuration to reflect these changes.

deploy/docker-compose/devcontainer-nginx.conf

@@ -3,17 +3,11 @@ server {
  server_name hanko-quickstart;
 
  location /elements.js {
-   proxy_set_header X-Real-IP $remote_addr;
-   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-   proxy_set_header X-NginX-Proxy true;
-   proxy_pass http://elements-nginx/elements/elements.js;
+   root /usr/share/nginx/html/elements/;
  }
 
  location /sdk.modern.js {
-   proxy_set_header X-Real-IP $remote_addr;
-   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-   proxy_set_header X-NginX-Proxy true;
-   proxy_pass http://elements-nginx/frontend-sdk/sdk.modern.js;
+   root /usr/share/nginx/html/frontend-sdk/;
  }
 
  location /backend/ {

deploy/docker-compose/devcontainers-full-setup.yaml

@@ -60,18 +60,6 @@ services:
         target: /workspace
     networks:
       - intranet
-  elements-nginx:
-    image: nginx:1-alpine
-    depends_on:
-      elements:
-        condition: service_started
-    ports:
-      - 8089:80
-    networks:
-      - intranet
-    volumes:
-      - ../../frontend/elements/dist/:/usr/share/nginx/html/elements/
-      - ../../frontend/frontend-sdk/dist/:/usr/share/nginx/html/frontend-sdk/
   quickstart:
     build: ../../quickstart
     ports:
@@ -95,11 +83,11 @@ services:
     image: nginx
     volumes:
       - ./devcontainer-nginx.conf:/etc/nginx/conf.d/default.conf
+      - ../../frontend/elements/dist/:/usr/share/nginx/html/elements/
+      - ../../frontend/frontend-sdk/dist/:/usr/share/nginx/html/frontend-sdk/
     depends_on:
       hanko:
         condition: service_started
-      elements-nginx:
-        condition: service_started
       mail:
         condition: service_started
       quickstart: