020、搭建本地Registry（2019-01-11 周五）

参考https://www.cnblogs.com/CloudMan6/p/6902325.html

 

Docker Hub 虽然方便，但还是有些限制，比如

    1、需要Internet连接，上传下载速度慢

    2、上传到Docker Hub上的公共镜像任何人都能访问，私有Registry需要收费

    3、出于安全原因很多公司不允许将镜像放到外网

 

最简单的解决方案就是搭建本地Registry（Registry也支持认证和https加密，这里不做讲解）

 

root@docker-lab:~/020# docker images

REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE

root@docker-lab:~/020# docker build -t test020 .    #    构建一个用于测试上传下载的镜像

Sending build context to Docker daemon  2.048kB

Step 1/2 : FROM busybox

latest: Pulling from library/busybox

57c14dd66db0: Pull complete

Digest: sha256:b6e640a3768c460ad6066a003b6da52034c31aaf8500f9263057ddffcd830ef6

Status: Downloaded newer image for busybox:latest

---> 3a093384ac30

Step 2/2 : CMD echo "Hello www1707"

---> Running in d0817c08cb82

Removing intermediate container d0817c08cb82

---> d93c942a1584

Successfully built d93c942a1584

Successfully tagged test020:latest

root@docker-lab:~/020# docker images

REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE

test020             latest              d93c942a1584        About a minute ago   1.2MB

busybox             latest              3a093384ac30        12 days ago          1.2MB

root@docker-lab:~/020# docker run -d -p 5000:5000 -v /myregistry:/var/lib/registry registry:2Unable to find image 'registry:2' locally    #    运行本地Registry容器

2: Pulling from library/registry

cd784148e348: Pull complete

0ecb9b11388e: Pull complete

918b3ddb9613: Pull complete

5aa847785533: Pull complete

adee6f546269: Pull complete

Digest: sha256:1cd9409a311350c3072fe510b52046f104416376c126a479cef9a4dfe692cf57

Status: Downloaded newer image for registry:2

f9e7d22e21d6e0c03b146a3e2100c135c14203308c4323b0673c45eaea97030d

root@docker-lab:~/020# docker images

REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE

test020             latest              d93c942a1584        About a minute ago   1.2MB

registry            2                   33fbbf4a24e5        9 days ago           24.2MB

busybox             latest              3a093384ac30        12 days ago          1.2MB

root@docker-lab:~/020# docker tag test020:latest 127.0.0.1:5000/www1707/test020:v1    #    为上传镜像打tag

root@docker-lab:~/020# docker images

REPOSITORY                       TAG                 IMAGE ID            CREATED             SIZE

127.0.0.1:5000/www1707/test020   v1                  d93c942a1584        3 minutes ago       1.2MB

test020                          latest              d93c942a1584        3 minutes ago       1.2MB

registry                         2                   33fbbf4a24e5        9 days ago          24.2MB

busybox                          latest              3a093384ac30        12 days ago         1.2MB

root@docker-lab:~/020# docker push 127.0.0.1:5000/www1707/test020:v1    #    上传镜像

The push refers to repository [127.0.0.1:5000/www1707/test020]

683f499823be: Pushed

v1: digest: sha256:b3d65da9455ca71f2bc2d2e1343a1ad1058829b027eee576976becc5ecdce8af size: 527

root@docker-lab:~/020# docker rmi 127.0.0.1:5000/www1707/test020:v1    #    删掉本地镜像

Untagged: 127.0.0.1:5000/www1707/test020:v1

Untagged: 127.0.0.1:5000/www1707/test020@sha256:b3d65da9455ca71f2bc2d2e1343a1ad1058829b027eee576976becc5ecdce8af

root@docker-lab:~/020# docker rmi test020:latest

Untagged: test020:latest

Deleted: sha256:d93c942a158487248506ac545d33f6fc27c7af29960a5b139e2ef4510b39f37b

root@docker-lab:~/020# docker images

REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE

registry            2                   33fbbf4a24e5        9 days ago          24.2MB

busybox             latest              3a093384ac30        12 days ago         1.2MB

root@docker-lab:~/020# docker pull 127.0.0.1:5000/www1707/test020:v1    #    下载镜像测试

v1: Pulling from www1707/test020

57c14dd66db0: Already exists

Digest: sha256:b3d65da9455ca71f2bc2d2e1343a1ad1058829b027eee576976becc5ecdce8af

Status: Downloaded newer image for 127.0.0.1:5000/www1707/test020:v1

root@docker-lab:~/020# docker images

REPOSITORY                       TAG                 IMAGE ID            CREATED             SIZE

127.0.0.1:5000/www1707/test020   v1                  d93c942a1584        4 minutes ago       1.2MB

registry                         2                   33fbbf4a24e5        9 days ago          24.2MB

busybox                          latest              3a093384ac30        12 days ago         1.2MB