hello-world

docker pull hello-world
docker images hell-world
docker run hello-world

COPY hello / CMD ["/hello"]

FROM scratch

centos

docker pull centos

ADD xx.tar.xz / CMD["/bin/bash"]

docker run -it centos

RUN yum install -y xxx

image.png

千层饼

两种镜像构建方式：docker commit 、dockerfile

docker commit xx yourimagename

dockerfile

FROM centos
RUN yum install -y vim
CMD["/bin/bash"]

构建:.当前目录

docker build -t yourimagename .

查看镜像分层结构

docker history yourimagename

不缓存：build --no-cache

Dockerfile

FROM busybox
RUN touch tempfile
RUN /bin/bash -c echo "xxx"
COPY testfile /

docker build -t xx .
docker run -it xxx

Dockerfile 常用指令

FROM
MAINTAINER
COPY
ADD :和COPY类似，但是如果是压缩文件，会解压
ENV
EXPOSE 端口
VOLUME
WORKDIR
RUN
CMD
ENTERPOINT:CMD或docker run 之后的参数会被传递给ENTERPOINT

image.png

建议使用列表形式[]

image.png

ENTERPOINT不会被忽略，一定会执行。CMD会被忽略

imagename= xx:tag

docker tag给镜像打tag

docker tag xx xx:1.9

搭建本地registry

docker run -d -p 5000:5000 -v /myregistry:/var/lib/registry registry:2

image.png

docker push xx:5000/xx/hxx

docker 指令

docker images
docker history xx
docker commit xxx
docker build
docker tag
docker pull xxx
docker push xxx
docker rmi xx
docker search xx