问题描述
配置文件挂载到本地的宿主机了
docker run -d -p 6000:5000 --restart=always --name registry -v `pwd`/config.yml:/etc/docker/registry/config.yml registry:2
修改过配置文件
查看仓库中的镜像信息
curl -X GET http://127.0.0.1:6000/v2/_catalog{'repositories':['myfirstimage','myfirstimage_2','myfirstimage_3']}
获取digest值
curl -I -X GET http://127.0.0.1:6000/v2/myfirstimage/manifests/latest HTTP/1.1 200 OKContent-Length: 5559Content-Type: application/vnd.docker.distribution.manifest.v1+prettyjwsDocker-Content-Digest: sha256:3a07b4e06c73b2e3924008270c7f3c3c6e3f70d4dbb814ad8bff2697123ca33cDocker-Distribution-Api-Version: registry/2.0Etag: 'sha256:3a07b4e06c73b2e3924008270c7f3c3c6e3f70d4dbb814ad8bff2697123ca33c'X-Content-Type-Options: nosniffDate: Sun, 31 Jul 2016 11:09:22 GMT
删除测试
curl -X DELETE http://127.0.0.1:6000/v2/myfirstimage/manifests/sha256:3a07b4e06c73b2e3924008270c7f3c3c6e3f70d4dbb814ad8bff2697123ca33c{'errors':[{'code':'MANIFEST_UNKNOWN','message':'manifest unknown'}]}
删除失败，这是为咋的
问题解答
回答1：问题出在了取 digest 的那一步。在 registry 2.3 及其以后的版本，为了防止误删除，在取 digest 的时候，必须提供一个特殊的头：
Accept: application/vnd.docker.distribution.manifest.v2+json
否则会返回一个错误的 digest。因此，取 digest 的语句应该用下面的形式：
curl --header 'Accept: application/vnd.docker.distribution.manifest.v2+json' -I -X HEAD http://127.0.0.1:6000/v2/myfirstimage/manifests/latest
这样取到的 digest 才是正确的。
参考官方文档：https://docs.docker.com/regis...
回答2：docker run -d -p 6000:5000 --restart=always --name registry6 -v pwd/config.yml:/etc/docker/registry/config.yml docker.io/registry:2.5.0
报错：37ba01d64aec14577e9e55ea2b2bfc4487eb070fad1b1c40e76e7cbddc916e6a/usr/bin/docker-current: Error response from daemon: invalid header field value 'oci runtime error: container_linux.go:247: starting container process caused 'process_linux.go:359: container init caused 'rootfs_linux.go:54: mounting '/root/config.yml' to rootfs '/var/lib/docker/devicemapper/mnt/2e35c587d0e8ff8ac8811a58b23cd3a489ff04b4eaa47b3d25fda2bd46b7646b/rootfs' at '/var/lib/docker/devicemapper/mnt/2e35c587d0e8ff8ac8811a58b23cd3a489ff04b4eaa47b3d25fda2bd46b7646b/rootfs/etc/docker/registry/config.yml' caused 'not a directory'''n'.
这说怎么回事？？我也想修改config.yml。求指教
