### Steps to install OpenProject package on Ubuntu 16.04 Xenial All steps are prepended with `sudo` to ensure execution as the root user. **1. Import the packager.io repository signing key** Import the PGP key used to sign our packages. Since we're using the _packager.io_ platform to distribute our packages, both package source and signing key are tied to their service. ```bash wget -qO- https://dl.packager.io/srv/opf/openproject/key | sudo apt-key add - ``` **2. Ensure that apt-transport-https is installed** Our repository requires apt to have https support. Install this transport method with `sudo apt-get install apt-transport-https` if you did not already. **3. Add the OpenProject package source** ``` sudo wget -O /etc/apt/sources.list.d/openproject.list \ https://dl.packager.io/srv/opf/openproject/stable/9/installer/ubuntu/16.04.repo ``` **4. Install the OpenProject Community Edition package** Using the following commands, apt will check the new package source and install the package and all required dependencies. ```bash apt-get update apt-get install openproject ```