When I use remote docker REST api without TLS and don't set "Server Credential", it always try using tls(https). Even if the env variable of DOCKER_TLS_VERIFY is 0, it does not work.

The build log is like below.
[docker] $ docker build -t shyr/sci --pull=true /home1/irteam/jenkins_home/workspace/docker
An error occurred trying to connect: Post
https://MY_DOCKER_HOST:11375/v1.24/build?buildargs=%7B%7D&buildbinds=null&cgroupparent=&cpuperiod=0&cpuquota=0&cpusetcpus=&cpusetmems=&cpushares=0&dockerfile=Dockerfile&labels=%7B%7D&memory=0&memswap=0&pull=1&rm=1&shmsize=0&t=shyr%2Fsci&ulimits=null
: http: server gave HTTP response to HTTPS client
Build step 'Docker Build and Publish' marked build as failure