Docker - 重建映像并将更新后的映像推送到 docker 云的正确方法是什么?

Docker - What is proper way to rebuild and push updated image to docker cloud?

我目前在做什么:

Docker 文件:

FROM python:3.5.1

ENV PYTHONUNBUFFERED 1

RUN mkdir /www
WORKDIR /www
ADD deps.txt /www/
RUN pip3 install -r deps.txt
ADD . /www/
RUN chmod 0755 /www/docker-init.sh

构建命令:

docker build -t my-djnago-app:latest .

标记:

docker tag my-djnago-app:latest lolorama/my-djnago-app-img:latest

推动:

docker push lolorama/my-djnago-app-img:latest

完成这些步骤后,存储库映像仍未更新。我不断收到此消息 - "Layer already exists".

The push refers to a repository [docker.io/lolorama/my-django-app-img]
fd5aa641b308: Layer already exists
d9c60c6f98e8: Layer already exists
d9d14867f6d7: Layer already exists
64ce166099ca: Layer already exists
73b670e35c69: Layer already exists
5f70bf18a086: Layer already exists
9ea142d097a5: Layer already exists
52f5845b1de0: Layer already exists
e7fadb3ab9d4: Layer already exists
cef72744de05: Layer already exists
591569fa6c34: Layer already exists
998608e2fcd4: Layer already exists
c12ecfd4861d: Layer already exists

我做错了什么?

我找到了问题,感谢@lorenzvth7!

我有两张带有相同标签的图片(我正在将其推送到云端)。

解决方案是:

  1. 检查您的图像并找到两个或更多具有相同标签的图像:

    docker images 
    
  2. 删除它们:

    docker rmi --force 'image id'
    
  3. 就是这样!按照我上面的问题中的步骤进行操作。

另一种解决方案,尽管是蛮力,是在再次推送之前使用 --no-cache 标志进行重建。

docker rmi --force my-djnago-app:latest

docker build -t my-djnago-app:latest . --no-cache

docker push my-djnago-app:latest

我也遇到了这个问题(In my web application),像这样:

# when I push my contaimer to repo
$ docker push <container>
The push refers to repository [docker.io/xx/getting-started]
fd5aa641b308: Layer already exists
d9c60c6f98e8: Layer already exists
d9d14867f6d7: Layer already exists
64ce166099ca: Layer already exists
73b670e35c69: Layer already exists
5f70bf18a086: Layer already exists
9ea142d097a5: Layer already exists
52f5845b1de0: Layer already exists

我尝试了我的解决方案,它很有效!

# force remove image
$ docker rmi --force <image-id>
# tag for image
$ docker tag <image-name> <your-dockerHub-username>/<image-name>
# push image, just done!
$ docker push <your-user-name>/<image-name>

终端输出:

# when I push my container to repo
$ docker push <container>
The push refers to repository [docker.io/xx/getting-started]
# it'll push your part of changes
fd5aa641b308: Pushed
d9c60c6f98e8: Pushed
d9d14867f6d7: Layer already exists
64ce166099ca: Layer already exists
73b670e35c69: Layer already exists
5f70bf18a086: Layer already exists
9ea142d097a5: Layer already exists
52f5845b1de0: Layer already exists

然后,打开my web appliction,更新到最新版本了!