# Introduction

HackMD Enterprise Edition will be delivered with Docker images, you will need Docker engine to run HackMD Enterprise Edition.

While CodiMD supports many database system, HackMD Enterprise Edition only supports PostgreSQL for better stability, you could follow this guide to migrate your database.

Before you start, you need to login to our Docker registry to pull the hackmd-ee Docker image. you can find the credentials you need in the email we sent.

### Hardware Requirement

* **CPU**: minimal 2 cores, 2 GHz
* **Memory**: minimal 8 GB
* **Disk**: free space at least 20 GB

### Software Requirement

* Docker Engine CE/EE 18.03 or higher on Linux x64 Architecture
* Docker Client CE/EE 18.03 or higher on Linux x64 Architecture

### Networking

* All HTTP traffic will go through port 3000.

:::warning
If you want to use **HTTPS** instead, you can configure a reverse proxy on the host's web server (i.e., Apache or nginx) and install your SSL Certificate on the web server. [More detail here.](#Setting-Reverse-Proxy-with-Nginx-for-HTTPS)
:::