Docker 安裝registry (構建私有鏡像庫)

下載registry鏡像

docker pull registry

遠行registry

// -v ~/registry:/var/lib/registry 掛載鏡像目錄
docker run -d -p 5000:5000 -v ~/registry:/var/lib/registry --name uwo_registry registry

上傳鏡像到私有庫

docker pull mongo
docker tag mongo localhost:5000/mongo
docker push localhost:5000/mongo

遠程訪問私有庫

配置/etc/default/docker

DOCKER_OPTS="-H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375"

配置/etc/docker/daemon.json容許HTTP訪問（默認是HTTPS）

{
	# 修改獲取鏡像源
	"registry-mirrors": ["https://dhq9bx4f.mirror.aliyuncs.com"],
	# 容許HTTP訪問
    "insecure-registries":["10.211.55.8:5000"]
}

registry API

查看全部的鏡像

http://10.211.55.8:5000/v2/_catalog

查看鏡像信息

http://10.211.55.8:5000/v2/mongo/tags/list

刪除私有庫中的鏡像

修改config.yml

// 主要添加delete.enabled = true
version: 0.1
log:
  fields:
    service: registry
storage:
  cache:
    blobdescriptor: inmemory
  filesystem:
    rootdirectory: /var/lib/registry
  delete:
    enabled: true
http:
  addr: :5000
  headers:
    X-Content-Type-Options: [nosniff]
health:
  storagedriver:
    enabled: true
    interval: 10s
    threshold: 3

從新run Registry

// 掛載config.yml
docker run -d -p 5000:5000 -v ~/registry:/var/lib/registry -v ~/registry/config.yml:/etc/docker/registry/config.yml --name uwo_registry registry

請求是添加HEADER

Accept: application/vnd.docker.distribution.manifest.v2+json

查詢鏡像

curl -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -I -X GET http://localhost:5000/v2/uwo-web/manifests/latest
// 結果
HTTP/1.1 200 OK
Content-Length: 2212
Content-Type: application/vnd.docker.distribution.manifest.v2+json
Docker-Content-Digest: sha256:94985f90eef634e674a1826cc469381e6ce8f188798308ee79b0045837ee2032
Docker-Distribution-Api-Version: registry/2.0
Etag: "sha256:94985f90eef634e674a1826cc469381e6ce8f188798308ee79b0045837ee2032"
X-Content-Type-Options: nosniff
Date: Tue, 15 Aug 2017 07:12:47 GMT

刪除鏡像

curl -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X DELETE http://10.211.55.8:5000/v2/uwo-web/manifests/sha256:94985f90eef634e674a1826cc469381e6ce8f188798308ee79b0045837ee2032

進入容器

docker exec -it f50ff19602d /bin/sh

查看容器大小

du -sch /var/lib/registry/
// 結果
373.8M	/var/lib/registry/
373.8M	total

垃圾回收

registry garbage-collect /etc/docker/registry/config.yml

再次查看容器大小

du -sch /var/lib/registry/
// 結果
126.0M	/var/lib/registry/
126.0M	total