strapi.conf

server {
# listen HTTP
    listen 80;
    server_name api.domain.com;

# Redirect HTTPS
    return 301 https://$host$request_uri;
}

server {

# Listen HTTP
    listen 443;
    server_name api.domain.com;

# SSL Config
    ssl on;
    ssl_certificate /etc/nginx/ssl/api.domain.com.crt;
    ssl_certificate_key /etc/nginx/ssl/api.domain.com.key;

# Proxy Config
    location / {
        proxy_pass http://strapi;
        proxy_http_version 1.1;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $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;
        proxy_set_header Host $http_host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_pass_request_headers on;
    }
}