add all possible hosts

deploy.sh

@@ -9,9 +9,30 @@ fi
 # Copy known hosts into the SSH config.
 mkdir -p ~/.ssh && chmod 0700 ~/.ssh
 cat ${GITHUB_ACTION_PATH}/known_hosts >> ~/.ssh/known_hosts
-# The platform.sh project host is hardcoded.
-# This can be fixed later by writing a script that is supposed to return the project hostname.
-ssh-keyscan -t rsa -H git.au.platform.sh >> ~/.ssh/known_hosts
+
+# Authenticate all possible platform.sh hosts.
+# USA region.
+ssh-keyscan -t rsa -H git.us.platform.sh   >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.us-2.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.us-3.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.us-4.platform.sh >> ~/.ssh/known_hosts
+
+# Europe region.
+ssh-keyscan -t rsa -H git.eu.platform.sh   >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.eu-2.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.eu-3.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.eu-4.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.eu-5.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.de-2.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.fr-3.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.fr-4.platform.sh >> ~/.ssh/known_hosts
+ssh-keyscan -t rsa -H git.uk-1.platform.sh >> ~/.ssh/known_hosts
+
+# Australia region.
+ssh-keyscan -t rsa -H git.au.platform.sh   >> ~/.ssh/known_hosts
+
+# Canada region.
+ssh-keyscan -t rsa -H git.ca-1.platform.sh >> ~/.ssh/known_hosts
 
 platform project:set-remote ${PLATFORM_PROJECT_ID}
 PLATFORM_OPTS="-vv --activate --target ${GITHUB_REF_NAME}"