通常我们在docker拉取的镜像都是在docker hub或quay.io等公有仓库获取，那么在实际工作中，每个公司如果使用到docker，那么肯定是要搭建自己的私有仓库。那么接下来就通过docker提供的registry镜像来搭建我们自己的私有仓库。
1、拉取registry镜像
这里默认拉取最新版本,不指定版本就默认拉取latest版本
docker pull registry
Using default tag: latest
latest: Pulling from library/registry
ddad3d7c1e96: Downloading
6eda6749503f: Download complete
363ab70c2143: Download complete
5b94580856e6: Download complete
12008541203a: Download complete
latest: Pulling from library/registry
ddad3d7c1e96: Pull complete
6eda6749503f: Pull complete
363ab70c2143: Pull complete
5b94580856e6: Pull complete
12008541203a: Pull complete
Digest: sha256:121baf25069a56749f249819e36b386d655ba67116d9c1c6c8594061852de4da
Status: Downloaded newer image for registry:latest
docker.io/library/registry:latest
使用镜像查看命令，查看镜像
docker images registry
REPOSITORY TAG IMAGE ID CREATED SIZE
registry latest 1fd8e1b0bb7e 3 months ago 26.2MB
2、运行registry镜像
docker run -d -p 5000:5000 --name registry registry:latest
795e0a78aea0bf39ea95f800221f26fb4882efd4c4dc2143f90b37ee10da3126
查看容器是否启动成功
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
795e0a78aea0 registry:latest "/entrypoint.sh /etc…" 43 seconds ago Up 42 seconds 0.0.0.0:5000->5000/tcp, :::5000->5000/tcp registry
查看私有仓库
curl -XGET http://127.0.0.1:5000/v2/_catalog
{"repositories":[]}
可以看到，目前私有仓库里面为空。
3、向私有仓库推送镜像
docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
arvin88/tomcat_user v1 77fc61f55a0c 2 days ago 590MB
现在将镜像arvin88/tomcat_user修改为127.0.0.1:5000/tomcat_user。
docker tag arvin88/tomcat_user:v1 127.0.0.1:5000/tomcat_user:v2
[root@localhost docker]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
127.0.0.1:5000/tomcat_user v2 77fc61f55a0c 2 days ago 590MB
arvin88/tomcat_user v1 77fc61f55a0c 2 days ago 590MB
推送到私有仓库。
docker push 127.0.0.1:5000/tomcat_user:v2
The push refers to repository [127.0.0.1:5000/tomcat_user]
fa24164bb3bf: Pushed
e4457e70997e: Pushed
ffb06ffdd1e8: Pushed
b6a3bb3fa031: Pushed
32fff2065e67: Pushed
ea822a1a4f9d: Pushed
fe6a347f93b5: Pushed
f3d5b8f65132: Pushed
ad83f0aa5c0a: Pushed
5a9a65095453: Pushed
4b0edb23340c: Pushed
afa3e488a0ee: Pushed
v2: digest: sha256:8d4ed98df7c6ea9b22e33f61c9fac6020625592d75c42759c640bc8ad2af889e size: 2841
然后再使用curl -XGET http://127.0.0.1:5000/v2/_catalog查看私有仓库。
curl -XGET http://127.0.0.1:5000/v2/_catalog
{"repositories":["tomcat_user"]}
可以看到已经推成功了。
4、从私有仓库拉取镜像
为了测试，先将本地镜像全部删除
docker pull 127.0.0.1:5000/tomcat_user:v2
v2: Pulling from tomcat_user
627b765e08d1: Pull complete
c040670e5e55: Pull complete
073a180f4992: Pull complete
bf76209566d0: Pull complete
f10db7ba7580: Pull complete
5e5dee180760: Pull complete
c26c02f721c2: Pull complete
d24d42fda432: Pull complete
20abf5c2533f: Pull complete
d16e82e0b4a0: Pull complete
32f2c6ec5ff1: Pull complete
975419add384: Pull complete
Digest: sha256:8d4ed98df7c6ea9b22e33f61c9fac6020625592d75c42759c640bc8ad2af889e
Status: Downloaded newer image for 127.0.0.1:5000/tomcat_user:v2
127.0.0.1:5000/tomcat_user:v2
查看本地镜像结果
REPOSITORY TAG IMAGE ID CREATED SIZE
127.0.0.1:5000/tomcat_user v2 77fc61f55a0c 2 days ago 590MB
5、常用API
- 查看私有仓库：curl -XGET http://127.0.0.1:5000/v2/_catalog
curl -XGET http://127.0.0.1:5000/v2/_catalog
{"repositories":["tomcat_user"]}
- 查看镜像
tag：curl -XGET http://127.0.0.1:5000/v2//tags/list
curl -XGET http://127.0.0.1:5000/v2/tomcat_user/tags/list
{"name":"tomcat_user","tags":["v2"]}
官网还提供了其他API，有兴趣可以查看仓库API