eg: wget --no-check-certificate -O docker-compose.yml https://raw.githubusercontent.com/spring-cloud/spring-cloud-dataflow/v2.6.3/spring-cloud-dataflow-server/docker-compose.yml; \
curl https://raw.githubusercontent.com/spring-cloud/spring-cloud-dataflow/v2.6.3/spring-cloud-dataflow-server/docker-compose.yml -o docker-compose.yml -k --insecure
详见加粗字段
