Delve（dlv）Golang调试器未在VS Code中的断点处停止，但使用了dlv connect

dlv version local and remote: 1.1.0
go version remote: go version go1.11.2 linux/amd64
go version localhost: go version go1.11.2 darwin/amd64

docker container(docker run -p 2345:2345)...dlv debug app --headless --log --listen=:2345

dlv connect localhost:2345

But Vs Code do not work, it connects but do not stop at breakpoints?

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Remote",
            "type": "go",
            "request": "launch",
            "mode": "remote",
            "remotePath": "${workspaceRoot}",
            "port": 2345,
            "host": "localhost",
            "program": "${workspaceRoot}",
            "env": {}
        }
    ]
}