docker - 如何从 docker compose 文件中的容器获取 journalctl 日志

Question

我有一个 docker compose 文件和 3 个包含此文件的容器。在其中一个容器中，应用程序（sampleappservice）将日志发送到 journalctl，我想抓住它。我怎样才能得到它？这是我的撰写文件：**

version: '3'
services:                
    simulatorservice:
        image: "data-simulator:latest"
        container_name: data-simulator
        build: 
          context: ./
          dockerfile: ./Dockerfile-simulator
        ports : 
        - "55501:55501"
        volumes:
        - ./data:/opt/apps/DataSimulator/data
    mosquittoservice:
        image: "databus:latest"
        container_name: databus
        build: 
          context: ./
          dockerfile: ./Dockerfile-databus        
        ports : 
        - "1883:1883"
    sampleappservice:##I need to get this container journalctl log.
        image: "sampleapp:latest"
        container_name: sampleapp
        build: 
          context: ./
          dockerfile: ./Dockerfile-sampleapp

**

标签： dockerdocker-composedockerfile