how to use synology docker gitlab and use xcode to commit and push code ?

step1. on Synology DSM, install "docker gitlab"
step2. login "docker gitlab"
step3. create project in "docker gitlab" (e.g. xxxx)
step4. open xcode and "source control > xxxx - master > configure xxxx > Remote (+)":
         [your DSM IP]:3000/root/xxxx.git

step5. commit code in xcode: "source control > commit..."
step6. push code in xcode: "source control > push..."