如何使docker-compose从远程git存储库构建映像？

Question

Docker-compose允许您使用preëxisting泊坞窗图像或从源构建.对于构建选项,官方参考需要

包含Dockerfile的目录的路径,或者是git存储库的url.

我想利用后一种情况,这样我就不必在项目中创建一个git子模块,或者在Docker Hub上注册一个新的存储库.不幸的是,没有关于如何格式化url的示例,我尝试的每个表单都被误认为是相对文件路径.

例如

---
letsencrypt:
  build: https://github.com/letsencrypt/letsencrypt.git
...

失败并出现错误:

错误:构建路径/{MY_CURRENT_PATH}/https:/github.com/letsencrypt/letsencrypt.git要么不存在,要么无法访问.

我尝试过的其他表格没有任何运气了:

• git@github.com:letsencrypt/letsencrypt.git
• 混帐://github.com/letsencrypt/letsencrypt.git
• https://github.com/letsencrypt/letsencrypt

Answer 1

你在运行1.5.2版吗？看起来这最近实际上是在https://github.com/docker/compose/pull/2430中添加的.尝试升级.

例:

---

version: '2'

services:
  redis:
    image: "redis:3.2.3"
    hostname: redis

  redis-commander:
    build: https://github.com/joeferner/redis-commander.git
    command: --redis-host redis
    links:
      - "redis:redis"
    ports:
      - 8081

经测试:

$ docker-compose -v
docker-compose version 1.11.2, build dfed245

Answer 2

该文件tests/unit/config/config_test.py显示:

def test_valid_url_in_build_path(self):
    valid_urls = [
        'git://github.com/docker/docker',
        'git@github.com:docker/docker.git',
        'git@bitbucket.org:atlassianlabs/atlassian-docker.git',
        'https://github.com/docker/docker.git',
        'http://github.com/docker/docker.git',
        'github.com/docker/docker.git',
    ]

这证实了compose/config/config.py#L79-L85:

DOCKER_VALID_URL_PREFIXES = (
    'http://',
    'https://',
    'git://',
    'github.com/',
    'git@',
)