Add instructions for ubuntu 22.04

docs/installation-and-operations/installation/packaged/README.md

@@ -28,6 +28,7 @@ The package is available for the following Linux distributions:
 
 | Distribution (64 bits only)                 |
 | ------------------------------------------- |
+| [Ubuntu 22.04 Jammy](#ubuntu-2204)          |
 | [Ubuntu 20.04 Focal](#ubuntu-2004)          |
 | [Ubuntu 18.04 Bionic Beaver](#ubuntu-1804)  |
 | [Ubuntu 16.04 Xenial Xerus](#ubuntu-1604)   |
@@ -49,7 +50,7 @@ x86_64
 
 ## Ubuntu Installation
 
-### Ubuntu 20.04
+### Ubuntu 22.04
 
 Import the PGP key used to sign our packages:
 
@@ -57,11 +58,13 @@ Import the PGP key used to sign our packages:
 wget -qO- https://dl.packager.io/srv/opf/openproject/key | sudo apt-key add -
 ```
 
+Note: you might get a warning when importing the key `Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8))`. This happens because APT has updated the way it manages signing keys, and the package provider is not supporting the new way yet.
+
 Add the OpenProject package source:
 
 ```bash
 sudo wget -O /etc/apt/sources.list.d/openproject.list \
-  https://dl.packager.io/srv/opf/openproject/stable/12/installer/ubuntu/20.04.repo
+  https://dl.packager.io/srv/opf/openproject/stable/12/installer/ubuntu/22.04.repo
 ```
 
 Download the OpenProject package:
@@ -75,6 +78,30 @@ Then finish the installation by reading the [*Initial configuration*](#initial-c
 
 <video src="https://openproject-docs.s3.eu-central-1.amazonaws.com/videos/openproject-installation-ubuntu.mp4" type="video/mp4" controls="" style="width:100%"></video>
 
+### Ubuntu 20.04
+
+Import the PGP key used to sign our packages:
+
+```bash
+wget -qO- https://dl.packager.io/srv/opf/openproject/key | sudo apt-key add -
+```
+
+Add the OpenProject package source:
+
+```bash
+sudo wget -O /etc/apt/sources.list.d/openproject.list \
+  https://dl.packager.io/srv/opf/openproject/stable/12/installer/ubuntu/20.04.repo
+```
+
+Download the OpenProject package:
+
+```bash
+sudo apt-get update
+sudo apt-get install openproject
+```
+
+Then finish the installation by reading the [*Initial configuration*](#initial-configuration) section.
+
 ### Ubuntu 18.04
 
 Import the PGP key used to sign our packages:

docs/installation-and-operations/system-requirements/README.md

@@ -67,6 +67,7 @@ The [package-based installation](../installation/packaged) requires one of the f
 
 | Distribution (**64 bits only**) |
 | ------------------------------- |
+| Ubuntu 22.04 Jammy              |
 | Ubuntu 20.04 Focal              |
 | Ubuntu 18.04 Bionic Beaver      |
 | Ubuntu 16.04 Xenial Xerus       |