从现有目录在命令行Linux中创建Docker映像

Question

我有一个包含文件和子目录的目录，并且我现在想在不使用Dockerfile的情况下通过命令行从该文件创建Docker映像，请不要问我为什么。

Answer 1

This can be done with docker commit . The simplest example would look something like the following:

docker run -d --name my-container <base-image>
docker cp . my-container:<path-where-files-go>
docker commit my-container <new-image-name>

Answer 2

The accepted answer surely works but is prone to producing inconsistent images. I would recommend using a dockerfile . This gives you a single point to make changes to your images. See example below...

Assuming your working directory has a single folder foo which you need in your image So next to it, create a file named dockerfile then edit the file to look as below

FROM <your_base_image:latest>
COPY foo /path/of/folder/in/image/foo

Now run the command below in your terminal . Ensure your working directory has both dockerfile and the folder foo

docker build . -t <your_image_name>

This dockerfile can be used to generate the exact same image every other time. Any changes added to it means that all new images generated from that dockerfile will contain the changes. Below are other commands you can add in your dockerfile to enrich the resulting images with nano editor

RUN apt-get update
RUN apt-get install nano -y