将文件从docker容器复制到主机
docker cp <containerId>:/file/path/within/container /host/path/target
将文件从主机复制到docker容器
docker cp foo.txt mycontainer:/foo.txt
dockerfile示例
FROM ubuntu:18.04
COPY . /app
RUN make /app
CMD python /app/app.py
docker ARG
$ docker build --build-arg some_variable_name=a_value
dockerfile复制特定文件
COPY ["__BUILD_NUMBER", "README.md", "gulpfile", "another_file", "./"]
All the files and folders, the last is destination
dockerfile运行应用程序cmd
RUN apt-get install python3
CMD echo "Hello world"
ENTRYPOINT echo "Hello world"