两种常用的镜像仓库：
- Docker 官方的仓库 registry
- VMware 的开源仓库 harbor（
内置了 registry）
Docker 官方的镜像仓库是部署在容器中的基于 http 协议的应用。
部署和使用方式如下：
Docker 官方的镜像仓库部署在 registry 容器中，查找并下载容器镜像：
[root@k8s-master /data]# docker search registry
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
registry The Docker Registry 2.0 implementation for s… 2725 [OK]
distribution/registry WARNING: NOT the registry official image!!! … 58 [OK]
stefanscherer/registry-windows Containerized docker registry for Windows Se… 27
budry/registry-arm Docker registry build for Raspberry PI 2 and… 18
第一个标记 OFFICIAL 的镜像即是，下载下来：
[root@k8s-master /data]# docker pull registry
Using default tag: latest
latest: Pulling from library/registry
c87736221ed0: Pull complete
1cc8e0bb44df: Pull complete
54d33bcb37f5: Pull complete
e8afc091c171: Pull complete
b4541f6d3db6: Pull complete
Digest: sha256:8004747f1e8cd820a148fb7499d71a76d45ff66bac6a29129bfdbfdc0154d146
Status: Downloaded newer image for registry:latest
docker.io/library/registry:latest
[root@k8s-master /data]#
[root@k8s-master /data]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
registry latest f32a97de94e1 7 months ago 25.8MB使用这个镜像启动一个容器：
[root@k8s-master /data]# docker run -d --name docker-registry -p 5000:5000 registry
c9ab1fae9c2a3dc8da48cbce5ec3cd0e9e8f227af6aa1395448db88a17cbc7bb
[root@k8s-master /data]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c9ab1fae9c2a registry "/entrypoint.sh /etc…" 8 seconds ago Up 5 seconds 0.0.0.0:5000->5000/tcp docker-registry创建配置文件 daemon.json（该文件默认不存在），添加私有仓库地址：
vim /etc/docker/daemon.json配置如下：
{
"registry-mirrors":["https://tdimi5ql.mirror.aliyuncs.com"],
"insecure-registries":["http://192.168.100.151:5000"]
}重启 docker 服务：
systemctl daemon-reload
systemctl restart docker查看发现重启服务后仓库（容器 registry）并没有自动启动，需要手动启动：
docker start docker-registry给想要提交到仓库的镜像打个标签：
[root@k8s-master /data]# docker tag app/jenkins 192.168.100.151:5000/app/jenkins
[root@k8s-master /data]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
192.168.100.151:5000/app/jenkins latest 83644f08fe7a 6 hours ago 660MB
app/jenkins latest 83644f08fe7a 6 hours ago 660MB实操发现，打标签的效果就是在镜像列表中多了一个存储库 REPOSITORY 或者说镜像名称不相同的的镜像，两个镜像的 id 完全一样，说明是同一个镜像。
接下来提交镜像到远程镜像仓库：
[root@k8s-master /data]# docker push 192.168.100.151:5000/app/jenkins
The push refers to repository [192.168.100.151:5000/app/jenkins]
559f4ae0e0c6: Pushed
fd685e9a5043: Pushed
cfdb476660b4: Pushed
318ee23a3d4a: Pushed
8cb2f467d731: Pushed
2cfb7a3b4cb2: Pushed
8fd6d61d388e: Pushed
aeb2f97d8c7a: Pushed
fcbb61c1c668: Pushed
b55cd0cf7e45: Pushed
917d7f6fc72d: Pushed
b4a4159a6c4a: Pushed
8bf46d2e80f6: Pushed
877b494a9f30: Pushed
latest: digest: sha256:fc58c06b0ff6ab1cbe895aa48ab8921e7fac1629aabba442fc9e3f4a7d818561 size: 3247接下来验证是否能够从远程仓库下载镜像。
先将已经提交到仓库的本地镜像删除。注意此时删除应该使用镜像名。如果使用 id 进行删除会报错，因为同一个 id 对应了两个镜像名（或者存在两个不同标签的镜像指向了同一个 id）：
[root@k8s-master /data]# docker rmi 83644f08fe7a
Error response from daemon: conflict: unable to delete 83644f08fe7a (must be forced) - image is referenced in multiple repositories正确操作：
第一次删除应该使用镜像名（REPOSITORY），此时可以看到该返回的提示是取消了标签，并未真正的删除该镜像。原因上面刚刚说过，是因为还有另一个标签指向了该镜像 id：
[root@k8s-master /etc/docker]# docker rmi app/jenkins
Untagged: app/jenkins:latest第二次删除就可以使用 id 了，当然使用镜像名也是可以的，此时就真正的删除了镜像：
[root@k8s-master /data]# docker rmi 192.168.100.151:5000/app/jenkins
Untagged: 192.168.100.151:5000/app/jenkins:latest
Untagged: 192.168.100.151:5000/app/jenkins@sha256:fc58c06b0ff6ab1cbe895aa48ab8921e7fac1629aabba442fc9e3f4a7d818561
Deleted: sha256:83644f08fe7a5b137269dcde4132bd1ddd3cebb785cdc63ca018d8b88c33847d
Deleted: sha256:50f47b580b31fb1ec8b2e36ed19230d7cc5518ea26559e2364630b3e3b202864
Deleted: sha256:50eea350fc0f273c8f900deb83141d965ce8289eba7c3840795261e47d3d4323
Deleted: sha256:89602543224d192f0d224755a8b5c63ff9c3928ab3495d680c218cd76cddf48a
Deleted: sha256:cbdbf0f481551f918ad0a235f0ecf6897022493b759fc9ff564c2b33db7dfede尝试从仓库拉取刚刚删除掉的镜像并查看：
[root@k8s-master /data]# docker pull 192.168.100.151:5000/app/jenkins
Using default tag: latest
latest: Pulling from app/jenkins
d8d02d457314: Already exists
5ae2c4acbc0f: Already exists
9d30c820b1f2: Already exists
5c50e57b98c7: Already exists
eebefd700a88: Already exists
c0a6323f718e: Already exists
07fd7191c06d: Already exists
146c19a74bc8: Already exists
c015e8b53603: Already exists
cf7384c89894: Already exists
da96a327dec8: Already exists
b79fb209b1a1: Already exists
9dac0f3f7b2b: Already exists
8478f3dea98b: Pull complete
Digest: sha256:fc58c06b0ff6ab1cbe895aa48ab8921e7fac1629aabba442fc9e3f4a7d818561
Status: Downloaded newer image for 192.168.100.151:5000/app/jenkins:latest
[root@k8s-master /data]#
[root@k8s-master /data]#
[root@k8s-master /data]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
192.168.100.151:5000/app/jenkins latest 83644f08fe7a 7 hours ago 660MB