Docker 通过 GitLab 构建容器注册表失败

Question

I follow the instructions on GitLab Container Registry but in the end I always receive the below error message on my Powershell line.

Sending build context to Docker daemon  14.44MB
Error response from daemon: unexpected error reading Dockerfile: read /var/lib/docker/tmp/docker-builder160316193/Dockerfile: is a directory

And, what I'm doing previously are:

1. I login with my credentials as my repo is a private one: docker login registry.gitlab.com/<my_username>/<my_repo_name> -u <my_username> -p <my_personal_access_token>
2. Then I typed cd C:\Users\<username>\source\repos\<repo_name>
3. I create a folder named Dockerfile on the same directory mentioned on second step
4. Finally, I run docker build -t registry.gitlab.com/<my_username>/<my_repo_name>. which should be very straightforward according to dear GitLab but I always go the error message I shared in the beginning of my question.

I run through on similar questions asked on internet and on this site, but can't figure it out what I am missing.

Thank you in advance.

Answer 1

A Dockerfile is a file with instructions on how to build a docker image. In your case it is just an empty folder.

Maybe you can start here: Docker Get Started Build Image