Simplifica sintaxis

        ${ELASTICSEARCH_IMAGE_NAME}:${ELASTICSEARCH_IMAGE_TAG};

    - >

      HEALTH_CHECK_URL="${ELASTIC_HOSTS}:${ELASTIC_PORT}/_cat/health?h=status";

      RESPONSE="red";

      until [ $RESPONSE = 'green' ];

      RESPONSE="";

      until [ "$RESPONSE" = "green" ]

      do

        RESPONSE=$(curl --silent -u "${ELASTIC_USER}:${ELASTIC_USER_PASS}" "${HEALTH_CHECK_URL}");

        echo "Waiting for elasticsearch server, remaining attempts...";