Docuseal

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DocuSeal is an open source platform that provides secure and efficient digital document signing and processing. Create PDF forms to have them filled and signed online on any device with an easy-to-use, mobile-optimized web tool. 

version: '3'

services:
  app:
    depends_on:
      postgres:
        condition: service_healthy
    image: docuseal/docuseal:latest
    ports:
      - 3000:3000
    volumes:
      - /srv/path/Docuseal/data:/data
    environment:
      - FORCE_SSL=false
      - DATABASE_URL=postgresql://postgres:postgres@postgres:5432/docuseal
    restart: unless-stopped

  postgres:
    image: postgres:15
    volumes:
      - '/srv/path/Docuseal/pg_data:/var/lib/postgresql/data'
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_DB: docuseal
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 5s
      timeout: 5s
      retries: 5
    restart: unless-stopped

In Nginx Proxy Manager, in Advanced > Custom Nginx Configuration, add:

location / {
    proxy_pass http://yourdocuseal.internal.hostname:port/;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-Host $host;
}