共有鏡像docker hub

首先得在 Docker Hub 上注冊一個賬號。

在 Docker Host 上登錄。

root@ubuntu:/home/yj# docker login Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one. Username: laster0xox0 Password: Login Succeeded

修改鏡像的 repository 使之與 Docker Hub 賬號匹配。
Docker Hub 為了區分不同用戶的同名鏡像，鏡像的 registry 中要包含用戶名，完整格式為：[username]/image:tag

root@ubuntu:/home/yj# docker tag httpd laster0xox0/httpd:v1 root@ubuntu:/home/yj# docker images laster0xox0/httpd REPOSITORY TAG IMAGE ID CREATED SIZE laster0xox0/httpd v1 0240c8f5816c 10 days ago 132MB

通過 docker push 將鏡像上傳到 Docker Hub。 Docker 會上傳鏡像的每一層。

root@ubuntu:/home/yj# docker push laster0xox0/httpd:v1 The push refers to repository [docker.io/laster0xox0/httpd] 7857c7afb135: Mounted from library/httpd 0ace1cc25781: Mounted from library/httpd 355bd981febe: Mounted from library/httpd 504b6a6a6fd2: Mounted from library/httpd 237472299760: Mounted from library/httpd v1: digest: sha256:a1ae45c9153b02ccf2d790882a7aa833fcef8cc1fa5fd3cc3990c2e41fb47c6c size: 1367

登錄 https://hub.docker.com，在Public Repository 中就可以看到上傳的鏡像。如果要刪除上傳的鏡像，只能在 Docker Hub 界面上操作。

這個鏡像可被其他 Docker host 下載使用了。

root@ubuntu:/home/yj# docker pull laster0xox0/httpd:v1 v1: Pulling from laster0xox0/httpd Digest: sha256:a1ae45c9153b02ccf2d790882a7aa833fcef8cc1fa5fd3cc3990c2e41fb47c6c Status: Image is up to date for laster0xox0/httpd:v1

本地倉庫Registry

啟動 registry 容器。

root@ubuntu:/home/yj# docker run -d -p 5000:5000 -v /myregistry:/var/lib/registry registry:2 Unable to find image 'registry:2' locally 2: Pulling from library/registry d6a5679aa3cf: Pull complete ad0eac849f8f: Pull complete 2261ba058a15: Pull complete f296fda86f10: Pull complete bcd4a541795b: Pull complete Digest: sha256:5a156ff125e5a12ac7fdec2b90b7e2ae5120fa249cf62248337b6d04abc574c8 Status: Downloaded newer image for registry:2 0e9835e9c0cebbe31aeabc076c1df8a24a7fa2435266882da5db6ac440d27899

通過 docker tag 重命名鏡像，使之與 registry 匹配。

root@ubuntu:/home/yj# docker tag laster0xox0/httpd:v1 127.0.0.1:5000/laster0xox0/httpd:v1

repository 的完整格式為：[registry-host]:[port]/[username]/xxx

通過 docker push 上傳鏡像。

root@ubuntu:/home/yj# docker push 127.0.0.1:5000/laster0xox0/httpd:v1 The push refers to repository [127.0.0.1:5000/laster0xox0/httpd] 7857c7afb135: Pushed 0ace1cc25781: Pushed 355bd981febe: Pushed 504b6a6a6fd2: Pushed 237472299760: Pushed

查看本地鏡像

root@ubuntu:/myregistry/docker/registry/v2/repositories# docker search 127.0.0.1:5000/laster0xox0 Error response from daemon: Unexpected status code 404 root@ubuntu:/myregistry/docker/registry/v2/repositories# curl http://127.0.0.1:5000/v2/_catalog {"repositories":["laster0xox0/httpd"]}

現在已經可通過 docker pull 從本地 registry 下載鏡像了。

超強干貨來襲 云風專訪：近40年碼齡，通宵達旦的技術人生

總結

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