VSCode - Can a task call another task?

You can make it depends on another task. Example:

    {
        "label": "secondTask",
        "type": "shell",
        "command": "<Your second task's command here>",
        "dependsOn": [
            "firstTask"
        ]
    },
    {
        "label": "firstTask",
        "type": "shell",
        "command": "<Your first task's command here>"
    }

Chaining tasks is possible. use "dependsOn": ['Build'] in task Deploy. source