message: Add RHEL8 instructions to INSTALL.md
diff: @@ -118,6 +118,17 @@ yum install cmake freetype-devel fontconfig-devel libxcb-devel libxkbcommon-deve
  yum group install "Development Tools"
  ```
  +#### RHEL 8
  +
  +On RHEL 8, like RHEL 7, you need a few extra libraries to build Alacritty. Here's a `dnf`
  +command that should install all of them. If something is still found to be
  +missing, please open an issue.
  +
  +```sh
  +dnf install cmake freetype-devel fontconfig-devel libxcb-devel libxkbcommon-devel
  +dnf group install "Development Tools"
  +```
  +
  #### openSUSE
  On openSUSE, you need a few extra libraries to build Alacritty. Here's
  