message: configure default value for env variable
diff: @@ -29,7 +29,7 @@ searchguard.multitenancy.tenants.enable_private: false\n\
  searchguard.auth.type: "openid"\n\
  \n\
  # the IdP metadata endpoint\n\
  -searchguard.openid.connect_url: "${KEYCLOAK_URL}/auth/realms/lagoon/.well-known/openid-configuration"\n\
  +searchguard.openid.connect_url: "${KEYCLOAK_URL:-}/auth/realms/lagoon/.well-known/openid-configuration"\n\
  \n\
  # the ID of the OpenID Connect client in your IdP\n\
  searchguard.openid.client_id: "searchguard"\n\
  