docker 镜像 上传到docker hub
需要按照如下步骤处理：我一直没有第三步，一直没有成功，直到尝试了一次docker tag ，上传docker hub就没有出现问题了。
step1——找到本地镜像的ID：docker images
step2——登陆Hub：docker login --username=username --password=password --email=email
step3——tag：docker tag <imageID> <namespace>/<image name>:<version tag eg latest>
step4——push镜像：docker push <namespace>/<image name>
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
centos6-ssh latest f6bb69ea7020 About an hour ago 556.4 MB
docker.io/jdeathe/centos-ssh latest f6aa254214ab 32 hours ago 214.7 MB
docker.io/centos centos6 8315978ceaaa 4 weeks ago 194.6 MB
# docker tagf6bb69ea7020 516249940/centos6-ssh:v1
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
516249940/centos6-ssh v1 f6bb69ea7020 About an hour ago 556.4 MB
centos6-ssh latest f6bb69ea7020 About an hour ago 556.4 MB
docker.io/jdeathe/centos-ssh latest f6aa254214ab 32 hours ago 214.7 MB
docker.io/centos centos6 8315978ceaaa 4 weeks ago 194.6 MB# docker push 516249940/centos6-ssh:v1
The push refers to a repository
e1e3a72d67ca: Layer already exists
05da2767947a: Layer already exists
ba149593d1ad: Layer already exists
eed64a3d3cac: Layer already exists
70a84a101c16: Layer already exists
52dcf50b12eb: Pushed
08204235bfac: Layer already exists
6cbd0415f265: Pushed
d73c31c5daa6: Layer already exists
v1: digest: sha256:79b18121746c65f6c55f4cf424bc11f6cb3004e3e071f8083484945ff278d1b9 size: 2174
#
登录我的docker hub看看查看仓库
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