message: do not fail if no `additional-yaml` is defined
diff: @@ -30,7 +30,7 @@ DEPLOYER_TOKEN=$(cat /var/run/secrets/lagoon/deployer/token)
  oc login --insecure-skip-tls-verify --token="${DEPLOYER_TOKEN}" https://kubernetes.default.svc
  -ADDITIONAL_YAMLS=($(cat .amazeeio.yml | shyaml keys additional-yaml))
  +ADDITIONAL_YAMLS=($(cat .amazeeio.yml | shyaml keys additional-yaml || echo ""))
  for ADDITIONAL_YAML in "${ADDITIONAL_YAMLS[@]}"
  do
  