About docker login in Ubuntu 18.04

最近想把自己的Docker镜像上传到Docker Hub和阿里云Docker镜像托管网站上，但是登录出现如下问题：

WARNING! Using --password via the CLI is insecure. Use --password-stdin.
** Message: 15:31:20.239: Remote error from secret service: org.freedesktop.DBus.Error.UnknownMethod: No such interface 'org.freedesktop.Secret.Collection' on object at path /org/freedesktop/secrets/collection/login
Error saving credentials: error storing credentials - err: exit status 1, out: `No such interface 'org.freedesktop.Secret.Collection' on object at path /org/freedesktop/secrets/collection/login`

经多方查找，发现是系统默认安装了golang-docker-credential-helpers，卸载以后就好了。

执行命令卸载：

sudo apt purge golang-docker-credential-helpers 

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  javascript-common libglu1-mesa libjemalloc1 libjs-jquery libjs-jquery-metadata libjs-jquery-tablesorter libodbc1 libsctp1 libwxbase3.0-0v5 libwxgtk3.0-0v5 python-backports.ssl-match-hostname python-cached-property python-certifi
  python-dockerpty python-docopt python-funcsigs python-functools32 python-jsonschema python-mock python-openssl python-pbr python-requests python-texttable python-urllib3 python-websocket redis-tools socat
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  golang-docker-credential-helpers* python-docker* python-dockerpycreds*
0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded.
After this operation, 1921 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 211235 files and directories currently installed.)
Removing python-docker (2.5.1-1) ...
Removing python-dockerpycreds (0.2.1-1) ...
Removing golang-docker-credential-helpers (0.5.0-2) ...

最后登录成功：

WARNING! Using --password via the CLI is insecure. Use --password-stdin.
WARNING! Your password will be stored unencrypted in /home/ubuntu/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded