POST requests hang forever

services:
  proxy:
    image: caddy:2-alpine
    restart: unless-stopped
    ports:
      - "8080:80"
    volumes:
      - ./Caddyfile:/etc/caddy/Caddyfile

  app:
    restart: unless-stopped
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "3000:3000"
    environment:
      - NODE_ENV=production
      - PORT=3000

services:
  proxy:
    image: caddy:2-alpine
    restart: unless-stopped
    ports:
      - "8080:80"
    volumes:
      - ./Caddyfile:/etc/caddy/Caddyfile

  app:
    restart: unless-stopped
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "3000:3000"
    environment:
      - NODE_ENV=production
      - PORT=3000

:80 {
    encode gzip zstd

    reverse_proxy app:3000 {
        header_up Host {host}
        header_up X-Real-IP {remote_host}
        header_up X-Forwarded-For {remote_host}
        header_up X-Forwarded-Proto {scheme}
    }
}

:80 {
    encode gzip zstd

    reverse_proxy app:3000 {
        header_up Host {host}
        header_up X-Real-IP {remote_host}
        header_up X-Forwarded-For {remote_host}
        header_up X-Forwarded-Proto {scheme}
    }
}