Merge pull request #10136 from Icinga/icinga-archive-keyring

.deb: let user install icinga-archive-keyring package

Author: julianbrost

doc/02-installation.md

@@ -31,9 +31,13 @@ Here's how to add it to your system:
 
 ```bash
 apt update
-apt -y install apt-transport-https wget gnupg
+apt -y install apt-transport-https wget
 
-wget -O - https://packages.icinga.com/icinga.key | gpg --dearmor -o /usr/share/keyrings/icinga-archive-keyring.gpg
+wget -O icinga-archive-keyring.deb "https://packages.icinga.com/icinga-archive-keyring_latest+debian$(
+ . /etc/os-release; echo "$VERSION_ID"
+).deb"
+
+apt install ./icinga-archive-keyring.deb
 
 DIST=$(awk -F"[)(]+" '/VERSION=/ {print $2}' /etc/os-release); \
  echo "deb [signed-by=/usr/share/keyrings/icinga-archive-keyring.gpg] https://packages.icinga.com/debian icinga-${DIST} main" > \
@@ -50,9 +54,13 @@ apt update
 
 ```bash
 apt update
-apt -y install apt-transport-https wget gnupg
+apt -y install apt-transport-https wget
+
+wget -O icinga-archive-keyring.deb "https://packages.icinga.com/icinga-archive-keyring_latest+ubuntu$(
+ . /etc/os-release; echo "$VERSION_ID"
+).deb"
 
-wget -O - https://packages.icinga.com/icinga.key | gpg --dearmor -o /usr/share/keyrings/icinga-archive-keyring.gpg
+apt install ./icinga-archive-keyring.deb
 
 . /etc/os-release; if [ ! -z ${UBUNTU_CODENAME+x} ]; then DIST="${UBUNTU_CODENAME}"; else DIST="$(lsb_release -c| awk '{print $2}')"; fi; \
  echo "deb [signed-by=/usr/share/keyrings/icinga-archive-keyring.gpg] https://packages.icinga.com/ubuntu icinga-${DIST} main" > \