message: docs: system requirements
diff: # Get CKB
  +We have CI to ensure CKB works in following systems, they are also the
  +recommended system to run CKB.
  +
  +OS | Arch
  +-------------|------
  +Ubuntu 16.04 | x64
  +macOS | x64
  +Windows\* | x64
  +
  +> \* Support for Windows is experimental. CKB is known to have serious performance
  +> issues when running in Windows.
  +
  +CKB should also work on any modern Linux distributions. However, we limit our
  +energy to focus on the support of following systems:
  +
  +OS | Arch
  +---------------|------
  +Ubuntu 18.04 | x64
  +Debian Stretch | x64
  +Arch Linux | x64
  +CentOS 7 | x64
  +
  +You can also [use docker](run-ckb-with-docker.md) if your operating system is
  +not properly supported by CKB for now.
  +
  ## Download from Releases
  We will publish binaries for each release via [Github Releases]. If your system
  -is listed there, you can download the package directory.
  +is listed there, you can download the package directly.
  CKB releases are signed. It is wise and more secure to check out for their [integrity](integrity-check.md).
  @@ -23,8 +48,6 @@ under section *Other Tools and Frameworks*
  [here](https://visualstudio.microsoft.com/downloads/) or
  [here](https://www.microsoft.com/en-us/download/details.aspx?id=48145).
  -We also provides docker images, see [how to run CKB with docker](run-ckb-with-docker.md).
  -
  ## Build from Source
  ### Install Build Dependencies
  