🚑 Fix host key checking

entrypoint

@@ -9,13 +9,12 @@ if [[ -z "$PLUGIN_PLAYBOOK" ]]; then
 fi
 
 if [[ -z "$PLUGIN_PRIVATE_KEY" ]]; then
-    echo -e "\e[31m'private_key' setting not defined, ABORT!\e[39m"
-    exit 1
+    echo -e "\e[31m[WARN] 'private_key' setting not defined !\e[39m"
+else
+    echo "$PLUGIN_PRIVATE_KEY" > /root/.ssh/id_ed
+    chmod 400 /root/.ssh/id_ed
 fi
 
-echo "$PLUGIN_PRIVATE_KEY" > /root/.ssh/id_ed
-chmod 400 /root/.ssh/id_ed
-
 if [[ -n "$PLUGIN_VAULT_TOKEN" ]]; then
     echo "Adding vault token to 'credentials/vault_token'"
     mkdir credentials
@@ -48,4 +47,5 @@ if [[ -n "$PLUGIN_LIMIT" ]]; then
 fi
 
 echo "\$ ansible-playbook $args"
+export ANSIBLE_HOST_KEY_CHECKING=False
 ansible-playbook $args