mastodon-app/nginx/mastodon.conf

map $http_upgrade $connection_upgrade {
  default upgrade;
  ''      close;
}

proxy_cache_path /run/nginx/cache levels=1:2 keys_zone=CACHE:10m inactive=7d max_size=1g;

server {
  listen 8000;
  listen [::]:8000;

  keepalive_timeout    70;
  sendfile             on;
  client_max_body_size 80m;

  root /app/code/public;

  gzip on;
  gzip_disable "msie6";
  gzip_vary on;
  gzip_proxied any;
  gzip_comp_level 6;
  gzip_buffers 16 8k;
  gzip_http_version 1.1;
  gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

  add_header Strict-Transport-Security "max-age=31536000";

  location / {
    try_files $uri @proxy;
  }

  location ~ ^/(emoji|packs|system/accounts/avatars|system/media_attachments/files) {
    add_header Cache-Control "public, max-age=31536000, immutable";
    add_header Strict-Transport-Security "max-age=31536000";
    try_files $uri @proxy;
  }

  location /sw.js {
    add_header Cache-Control "public, max-age=0";
    add_header Strict-Transport-Security "max-age=31536000";
    try_files $uri @proxy;
  }

  location @proxy {
    # forwarding cloudron's nginx proxy-proto headers
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $http_x_real_ip;
    proxy_set_header X-Forwarded-For $http_x_forwarded_for,$remote_addr;
    proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
    proxy_set_header X-Forwarded-Host $http_x_forwarded_host;
    proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
    proxy_set_header X-Forwarded-Server $http_x_forwarded_server;

    proxy_set_header Proxy "";
    proxy_pass_header Server;

    proxy_pass http://127.0.0.1:3000;
    proxy_buffering on;
    proxy_redirect off;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;

    proxy_cache CACHE;
    proxy_cache_valid 200 7d;
    proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
    add_header X-Cached $upstream_cache_status;
    add_header Strict-Transport-Security "max-age=31536000";

    tcp_nodelay on;
  }

  location /api/v1/streaming {
    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 https;
    proxy_set_header Proxy "";

    proxy_pass http://127.0.0.1:4000;
    proxy_buffering off;
    proxy_redirect off;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;

    tcp_nodelay on;
  }

  error_page 500 501 502 503 504 /500.html;
}