How can I config correctly for the nginx server

[BertramYe]

I just host the project in my server, but when I finished the config for the nginx server with the proxy of the 3000 reverse and ssl config, I found the issue when I successfully login in the account, just like here below, it seems that just request the resouce from the backend, but it always feedback with the error here below:
how can I make it correctly for the nginx server config for the resource download?

[linear]

CAP-639

[tembo]

Based on the screenshot showing resource loading errors after login with your nginx reverse proxy setup, this is likely related to the S3/MinIO endpoint configuration for HTTPS deployments. Several community members have encountered similar issues and documented solutions.

Key Configuration Points

When running Cap behind nginx with SSL, you need to configure two separate endpoints for S3/MinIO storage:

1. S3_PUBLIC_ENDPOINT - Must be accessible from users' browsers (requires HTTPS to avoid mixed content errors)
2. S3_INTERNAL_ENDPOINT - Used by the Cap container internally (can be HTTP)

From the docker-compose.yml:

S3_PUBLIC_ENDPOINT: ${S3_PUBLIC_URL:-http://localhost:9000}
S3_INTERNAL_ENDPOINT: http://minio:9000

For production HTTPS deployments, you'll need to proxy MinIO through nginx with a subdomain like s3.yourdomain.com and set S3_PUBLIC_ENDPOINT: "https://s3.yourdomain.com".

Related Issues and Community Solutions

• #1406 - Detailed explanation of the HTTPS/mixed content issue with S3 endpoints
• #1352 - Self-hosted login issues with reverse proxies (includes working Caddy and nginx configs)
• #1384 - Digital Ocean deployment guide with nginx

Working nginx Configuration Example

From the community discussion in #1352, here's a reference nginx config pattern for the S3 subdomain:

server {
    listen 443 ssl;
    server_name s3.yourdomain.com;
    
    ssl_certificate /path/to/cert;
    ssl_certificate_key /path/to/key;
    
    location / {
        proxy_pass http://127.0.0.1:9000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

Community Deployment Templates

• FarhanSE/cap-digital-ocean-deployment - Complete Docker Compose template with nginx reverse proxy and SSL
• webvijayi/cap-install - One-click installer that handles nginx/Apache conflict detection

Environment Variables to Check

Make sure your .env or docker-compose environment includes:

• CAP_URL / WEB_URL - Your HTTPS domain (e.g., https://cap.yourdomain.com)
• NEXTAUTH_URL - Same as above
• S3_PUBLIC_ENDPOINT - Your HTTPS S3 subdomain (e.g., https://s3.cap.yourdomain.com)

[BertramYe]

@claude and @mogita and @axsaucedo per check , for the bad header issue, it still be there , even accoding to the config above