add custom 502 error page

modules/apps/gateway/cloud-init/service.yaml

@@ -22,8 +22,7 @@ packages:
   - git
   - nfs-common
   - curl
-  - python3-flask
-  - gunicorn
+  - nginx
 
 write_files:
   - path: /opt/environment/.env
@@ -38,9 +37,18 @@ write_files:
     permissions: "0755"
     content: |
       ${traefik-service}
-
+  - path: /usr/share/nginx/error-pages/502.html
+    permissions: "0644"
+    content: |
+      {nginx-error-502}
+  - path: /etc/nginx/sites-available/default
+    permissions: "0644"
+    content: |
+      {nginx-error-configuration}
 runcmd:
   - /opt/gateway/install-traefik.sh
+  - ln -s /etc/nginx/sites-available/default /etc/nginx/sites-enabled
+  - systemctl start nginx.service
 
 final_message: |
   Base system ready for ${hostname}