docker run --rm -d -v /var/run/docker.sock:/var/run/docker.sock -p 127.0.0.1:2375:2375 bobrik/socat TCP-LISTEN:2375,fork UNIX-CONNECT:/var/run/docker.sock

then view the current docker engine version through docker version, such as 1.40. View the official engine API document: https://docs.docker.com/engine/api Search for an image to test:

$curl -XGET http://127.0.0.1:2375/version | python -mjson.tool

{
    "ApiVersion": "1.41",
    "Arch": "amd64",
    "BuildTime": "2021-07-30T19:52:10.000000000+00:00",
    "Components": [
        {
            "Details": {
                "ApiVersion": "1.41",
                "Arch": "amd64",
                "BuildTime": "2021-07-30T19:52:10.000000000+00:00",
                "Experimental": "false",
                "GitCommit": "75249d8",
                "GoVersion": "go1.16.6",
                "KernelVersion": "5.10.47-linuxkit",
                "MinAPIVersion": "1.12",
                "Os": "linux"
            },
            "Name": "Engine",
            "Version": "20.10.8"
        },
        {
            "Details": {
                "GitCommit": "e25210fe30a0a703442421b0f60afac609f950a3"
            },
            "Name": "containerd",
            "Version": "1.4.9"
        },
        {
            "Details": {
                "GitCommit": "v1.0.1-0-g4144b63"
            },
            "Name": "runc",
            "Version": "1.0.1"
        },
        {
            "Details": {
                "GitCommit": "de40ad0"
            },
            "Name": "docker-init",
            "Version": "0.19.0"
        }
    ],
    "GitCommit": "75249d8",
    "GoVersion": "go1.16.6",
    "KernelVersion": "5.10.47-linuxkit",
    "MinAPIVersion": "1.12",
    "Os": "linux",
    "Platform": {
        "Name": "Docker Engine - Community"
    },
    "Version": "20.10.8"
}