Question

我想在已经具有本地存储映像的Linux服务器上使用docker-compose运行应用程序。

该应用程序包含两个服务。在服务器上运行docker images表示图像确实存在：

REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE
app_nginx            latest              b8362b71f3da        About an hour ago   107MB
app_dash_alert_app   latest              432f03c01dc6        About an hour ago   1.67GB

这是我的docker-compose.yml：

version: '3'

services:

  dash_alert_app:
    container_name: dash_alert_app
    restart: always
    build: ./dash_alert_app
    ports:
      - "8000:8000"
    command: gunicorn -w 1 -b :8000 dash_histogram_daily_counts:server


  nginx:
    container_name: nginx
    restart: always
    build: ./nginx
    ports:
      - "80:80"
    depends_on:
      - dash_alert_app

当我跑步时，docker-compose pull似乎可以看到图像并将其拉入：

$ sudo docker-compose pull
Pulling dash_alert_app ... done
Pulling nginx          ... done

但是当我尝试旋转容器时，我得到以下提示，仍然需要构建图像：

$ docker-compose up -d --no-build
ERROR: Service 'dash_alert_app' needs to be built, but --no-build was passed.

请注意，我已将docker配置为将图像存储在/mnt/data/docker中-这是我的/etc/docker/daemon.json文件：

{
    "graph": "/mnt/data/docker",
    "storage-driver": "overlay",
    "bip": "192.168.0.1/24"
}

这是我的文件夹结构：

.
│   docker-compose.yml 
└───dash_alert_app
└───nginx

为什么docker-compose不使用本地存在的图像？

Answer 1

好像您忘记了指定image键。另外，您是否真的必须使用docker-compose build重新构建映像，或者现有的映像是否足够？如果是这样，请尝试以下操作：

version: '3'

services:

  dash_alert_app:
    image: app_dash_alert_app
    container_name: dash_alert_app
    restart: always
    ports:
      - "8000:8000"
    command: gunicorn -w 1 -b :8000 dash_histogram_daily_counts:server


  nginx:
    image: app_nginx
    container_name: nginx
    restart: always
    ports:
      - "80:80"
    depends_on:
      - dash_alert_app

docker-compose未检测到本地图像

1 个答案: