Docker-撰写标签有问题

Question

我正在尝试使用其文档中显示的示例设置 Traefik 反向代理。当我尝试启动 'whoami' 服务时，出现以下错误：

Creating test_whoami_1 ... 

ERROR: for test_whoami_1  dictionary update sequence element #0 has length 22; 2 is required

ERROR: for whoami  dictionary update sequence element #0 has length 22; 2 is required
Traceback (most recent call last):
  File "bin/docker-compose", line 6, in <module>
  File "compose/cli/main.py", line 68, in main
  File "compose/cli/main.py", line 121, in perform_command
  File "compose/cli/main.py", line 952, in up
  File "compose/project.py", line 455, in up
  File "compose/parallel.py", line 70, in parallel_execute
ValueError: dictionary update sequence element #0 has length 22; 2 is required
Failed to execute script docker-compose

示例 docker-compose.yml 可以在 Traefik 文档中找到： test/docker-compose.yml

version: '3.3'

services:
  whoami:
    image: emilevauge/whoami
    networks:
      - web
    labels:
      - "traefik.backend=whoami"
      - "traefik.frontend.rule=Host:whoami.docker.localhost"

networks:
  web:
    external:
      name: traefik_webgateway

traefik/docker-compose.yml

version: '3.3'

services:
  proxy:
    image: traefik:1.4.1
    restart: always
    ports:
      - 80:80
      - 8080:8080
    command: --web --docker --docker.domain=docker.localhost --logLevel=DEBUG
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
      - "./traefik.toml:/traefik.toml"
    container_name: traefik

networks:
  webgateway:
    driver: bridge

使用以下 docker 和 docker-compose 版本：

Docker version 17.09.0-ce, build afdb6d4
docker-compose version 1.17.0, build ac53b73

Answer 1

Docker 撰写标签包含在版本 v3.3 中，您运行版本 1.17.0

有关详细信息，请参阅 doc。

Answer 2

解决方案：降级到docker-compose v1.16.1.

Answer 3

我确认 metanerd 的回答：

使用

labels:
  traefik.backend: "whoami"
  traefik.frontend.rule: "Host:whoami.docker.localhost"

有效。

Answer 4

我相信，在 3.3 中，您将标签放在构建属性下例如见下文

version: '3.3'
services:
  sample-app:
    image: ${IMAGE_NAME}
    build:
      context: .
      labels:
        org.label-schema.build-date: ${BUILD_DATE}
        org.label-schema.commit: ${COMMIT}
...

您可以从 docker 检查中看到，标签已应用

docker inspect --format='{{json .Config.Labels}}' blah/sample-app

{"org.label-schema.build-date":"2019-05-24-10-36-22","org.label-schema.commit":"2cc11a2"}

见https://docs.docker.com/compose/compose-file/

Answer 5

升级您的 docker 和 docker - 两者兼备。它将自动修复。

Docker-撰写标签有问题

Docker-compose having problems with labels

docker

docker-compose

traefik