mastodon-app/nginx/mastodon.conf

# derived from https://github.com/mastodon/mastodon/blob/main/dist/nginx.conf

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

upstream backend {
    server 127.0.0.1:3000 fail_timeout=0;
}

upstream streaming {
    server 127.0.0.1:4000 fail_timeout=0;
}

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 99m;

  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 image/svg+xml image/x-icon;

  location / {
    try_files $uri @proxy;
  }

  location = /sw.js {
    add_header Cache-Control "public, max-age=604800, must-revalidate";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    try_files $uri =404;
  }

  location ~ ^/assets/ {
    add_header Cache-Control "public, max-age=2419200, must-revalidate";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    try_files $uri =404;
  }

  location ~ ^/avatars/ {
    add_header Cache-Control "public, max-age=2419200, must-revalidate";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    try_files $uri =404;
  }

  location ~ ^/emoji/ {
    add_header Cache-Control "public, max-age=2419200, must-revalidate";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    try_files $uri =404;
  }

  location ~ ^/headers/ {
    add_header Cache-Control "public, max-age=2419200, must-revalidate";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    try_files $uri =404;
  }

  location ~ ^/packs/ {
    add_header Cache-Control "public, max-age=2419200, must-revalidate";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    try_files $uri =404;
  }

  location ~ ^/shortcuts/ {
    add_header Cache-Control "public, max-age=2419200, must-revalidate";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    try_files $uri =404;
  }

  location ~ ^/sounds/ {
    add_header Cache-Control "public, max-age=2419200, must-revalidate";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    try_files $uri =404;
  }

  location ~ ^/system/ {
    add_header Cache-Control "public, max-age=2419200, immutable";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
    add_header X-Content-Type-Options nosniff;
    add_header Content-Security-Policy "default-src 'none'; form-action 'none'";
    try_files $uri =404;
  }

  location ^~ /api/v1/streaming {
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $http_x_real_ip;
    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://streaming;
    proxy_buffering off;
    proxy_redirect off;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;

    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";

    tcp_nodelay on;
  }

  location @proxy {
    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 Proxy "";
    proxy_pass_header Server;

    proxy_pass http://backend;
    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_valid 410 24h;
    proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
    add_header X-Cached $upstream_cache_status;

    tcp_nodelay on;
  }

  error_page 404 500 501 502 503 504 /500.html;
}