1. In order to avoid using a privileged identity every time you use docker, you can add the current user to the docker user group
2. docker rmi image:tag delete image, -f force delete
docker rmi imageId is also deleted
docker rm containerId delete container
3. docker ps -a View all containers that exist on the machine
4. How to create an image:
(1) Create a docker commit based on an existing mirrored container
(2) Import docker import based on the local template
5. docker inspect image/container id: Get the metadata of the image or container
6. docker run creates and starts the container: the -d parameter runs the container in the background; the -v parameter creates a data volume in the container
docker stop container id: terminate the container, docker start starts the container
docker exec -it container id: enter the container
docker logs -f container id : View container logs
docker run : create a new container and run a command
grammar
docker run [OPTIONS] IMAGE [COMMAND][ARG...]
OPTIONS Description:
-a stdin: Specify the content type of standard input and output, and three items of STDIN/STDOUT/STDERR are optional;
-d: run the container in the background and return the container ID;
-i: run the container in interactive mode, usually used with -t;
-t: reallocate a pseudo input terminal for the container, usually used at the same time as -i;
--name="nginx-lb": Specify a name for the container;
--dns 8.8.8.8: Specify the DNS server used by the container, the default is the same as the host;
--dns-search example.com: Specify the container DNS search domain name, the default is the same as the host;
-h "mars": specifies the hostname of the container;
-e username="ritchie": set environment variables;
--env-file=[]: Read environment variables from the specified file;
--cpuset="0-2" or --cpuset="0,1,2": Bind the container to the specified CPU to run;
-m : Set the maximum memory used by the container;
--net="bridge": Specify the network connection type of the container, support bridge/host/none/container: four types;
--link=[]: add a link to another container;
--expose=[]: open a port or a group of ports;
7. docker export exports the container docker import imports the container
8. docker ps: List containers
grammar
docker ps [OPTIONS]
OPTIONS Description:
-a : Show all containers, including not running ones.
-f :根据条件过滤显示的内容。
--format :指定返回值的模板文件。
-l :显示最近创建的容器。
-n :列出最近创建的n个容器。
--no-trunc :不截断输出。
-q :静默模式，只显示容器编号。
-s :显示总的文件大小。
9、 docker port 容器名称 ： 查看端口映射
10、docker exec -it 容器id bash 进入容器内部
docker exec -it itbilu-mysql bash
11、docker logs -f 容器id ： 查看容器日志
12、docker rm $(docker ps -a -q) ： 删除所有容器
docker rm $(docker ps | grep "athena" | awk ' {print $1}' ) 查出名称包含athena的，取第一列（id列）
13、docker ps -s 查看各个容器占用空间大小。
14、docker system df查看Docker的磁盘使用情况
15、docker system prune命令可以用于清理磁盘，删除关闭的容器、无用的数据卷和网络，以及dangling镜像(即无tag的镜像)。docker system prune -a命令清理得更加彻底，可以将没有容器使用Docker镜像都删掉。
16、docker-compose logs：查看所有容器的日志
17、docker stats查看各个容器的cpu和内存利用率
18、apt-get remove docker-ce 卸载docker-ce
rm -rf /var/lib/docker : 删除镜像、容器、存储卷
sudo rm /usr/local/bin/docker-compose 卸载docker-compose
19、从宿主机拷文件到容器里面
在宿主机里面执行如下命令：docker cp 要拷贝的文件路径 容器名：要拷贝到容器里面对应的路径