docker learn

旧城等待， 2023-05-30 15:53 98阅读 0赞

## ubuntu 安装docker ##

参考https://docs.docker.com/engine/install/ubuntu/

sudo apt-get remove docker docker-engine docker.io containerd runc

$ sudo apt-get update
    
    $ sudo apt-get install \
        apt-transport-https \
        ca-certificates \
        curl \
        gnupg-agent \
        software-properties-common

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

$ sudo apt-key fingerprint 0EBFCD88
    
    pub   rsa4096 2017-02-22 [SCEA]
         9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
    uid           [ unknown] Docker Release (CE deb) <docker@docker.com>
    sub   rsa4096 2017-02-22 [S]

$ sudo add-apt-repository \
       "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
       $(lsb_release -cs) \
       stable"

$ sudo apt-get update
     $ sudo apt-get install docker-ce docker-ce-cli containerd.io

$ sudo docker run hello-world

## 第一个docker Dockerfile ##

# Dockerfile
    FROM ubuntu

build

$ docker build -t carl/learn:1.0 .

运行

$ docker run -it carl/learn:1.0 bash

退出来以后什么也不会保存。可以在退出前，在另外的窗口提交更改

$ docker ps
    
    CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS              NAMES
    c3f279d17e0a        ubuntu:12.04        /bin/bash           7 days ago          Up 25 hours                            desperate_dubinsky
    197387f1b436        ubuntu:12.04        /bin/bash           7 days ago          Up 25 hours                            focused_hamilton
    
    $ docker commit c3f279d17e0a  carl/learn:1.1
    
    f5283438590d
    
    $ docker images
    
    REPOSITORY                        TAG                 ID                  CREATED             SIZE
    svendowideit/testimage            version3            f5283438590d        16 seconds ago      335.7 MB

## how to copy file from docker container to local host ##

https://stackoverflow.com/questions/22049212/copying-files-from-docker-container-to-host

docker cp :/file/path/within/container /host/path/target

$ sudo docker cp goofy\_roentgen:/out\_read.jpg .

## 如何保存image ##

You will need to save the Docker image as a tar file:

docker save -o <path for generated tar file> <image name>

Then copy your image to a new system with regular file transfer tools such as cp, scp or rsync(preferred for big files). After that you will have to load the image into Docker:

docker load -i <path to image tar file>

PS: You may need to sudo all commands.

EDIT: You should add filename (not just directory) with -o, for example:

docker save -o c:/myfile.tar centos:16

## 如何将Docker容器通过独立IP暴露给局域网 ##

*  参考https://www.cnblogs.com/Jing-Wang/p/10848960.html
 *  参考https://blog.csdn.net/lvshaorong/article/details/69950694

--------------------

参考

[How to copy Docker images from one host to another without using a repository?][How to copy Docker images from one host to another without using a repository]

https://docs.docker.com/engine/reference/commandline/commit/

[How to copy Docker images from one host to another without using a repository]: https://stackoverflow.com/questions/23935141/how-to-copy-docker-images-from-one-host-to-another-without-using-a-repository/23938978#23938978