docker

docker images 查看镜像（本地的镜像或者远程下载的镜像）

[root@VM-0-2-centos ~]# docker images
REPOSITORY          TAG       IMAGE ID       CREATED        SIZE
nginx               latest    7baf28ea91eb   3 days ago     133MB
keking/kkfileview   latest    8dcf02dd90c7   4 months ago   1.09GB
java                8         d23bdf5b1b1b   3 years ago    643MB

docker ps 查询正在运行的容器

[root@VM-0-2-centos ~]# docker ps
CONTAINER ID   IMAGE     COMMAND                  CREATED        STATUS        PORTS                NAMES
976f00bb7d26   nginx     "/docker-entrypoint.…"   38 hours ago   Up 38 hours   0.0.0.0:81->80/tcp   hungry_pascal
[root@VM-0-2-centos ~]# 

docker ps -a 查询docker 里面有多少个容器（运行的和未运行的）

[root@VM-0-2-centos ~]# docker ps -a
CONTAINER ID   IMAGE               COMMAND                  CREATED        STATUS        PORTS                NAMES
976f00bb7d26   nginx               "/docker-entrypoint.…"   39 hours ago   Up 39 hours   0.0.0.0:81->80/tcp   hungry_pascal
dcf3e733f670   keking/kkfileview   "java -Dfile.encodin…"   2 months ago   Created                            stupefied_easley
23e3cede784d   keking/kkfileview   "java -Dfile.encodin…"   2 months ago   Created                            recursing_cohen
83741d122487   keking/kkfileview   "java -Dfile.encodin…"   2 months ago   Created                            priceless_swartz
35ea12b36057   keking/kkfileview   "java -Dfile.encodin…"   2 months ago   Created                            hardcore_kirch
[root@VM-0-2-centos ~]# 

docker 中容器的删除， 根据容器的id 进行删除

[root@VM-0-2-centos ~]# docker rm 35ea12b36057
35ea12b36057
[root@VM-0-2-centos ~]# 

docker 中image(镜像的删除)

docker rmi 镜像Id

[root@VM-0-2-centos ~]# docker images;
REPOSITORY          TAG       IMAGE ID       CREATED        SIZE
nginx               latest    7baf28ea91eb   3 days ago     133MB
keking/kkfileview   latest    8dcf02dd90c7   4 months ago   1.09GB
java                8         d23bdf5b1b1b   3 years ago    643MB
[root@VM-0-2-centos ~]# docker rmi 8dcf02dd90c7
Untagged: keking/kkfileview:latest
Untagged: keking/kkfileview@sha256:b6f76aa5f56224ebc4a481afb2ae7f366e8e42a08daa255d30d92ff74fa50f38
Deleted: sha256:8dcf02dd90c7b3b6811be60f353ae08f4a76b85cc12d072ba6aa1555c81e38e4
Deleted: sha256:a4f5def36fdaaa433f576d15a909b365577b3cb7282767a70543190e36051089
Deleted: sha256:954731ae8a60c3a5abc9edc9f48a0b81544b629413b70efaeb3ea8577fefb910
Deleted: sha256:92ee0570d0ad3a30f5e9b1ff301e8adb367c0da03d79f84332c1172382c8b654
Deleted: sha256:be38051dda60e749f9d5ed85797298f29189687892a8a6bc53ca03a60559662c
Deleted: sha256:88bebd8434e1404be18216a8570c5d271def87d51cb78e5bb6c5a7c17a64f55e
Deleted: sha256:54a124f068afcdda2f8640596bfab1ffb1589d6dc31214e61824362303dd4112
Deleted: sha256:d22cfd6a8b16689838c570b91794ed18acc752a08a10bce891cc64acc1533b3f
[root@VM-0-2-centos ~]# docker images;
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
nginx        latest    7baf28ea91eb   3 days ago    133MB
java         8         d23bdf5b1b1b   3 years ago   643MB
[root@VM-0-2-centos ~]# 

获取镜像(如果没有设置版本，默认是最新稳定版)

docker pull nginx

[root@VM-0-2-centos ~]# docker pull nginx
Using default tag: latest
latest: Pulling from library/nginx
6ec7b7d162b2: Pull complete 
bbce32568f49: Pull complete 
5928664fb2b3: Pull complete 
a85e904c7548: Pull complete 
ac39958ca6b1: Pull complete 
Digest: sha256:31de7d2fd0e751685e57339d2b4a4aa175aea922e592d36a7078d72db0a45639 
Status: Downloaded newer image for nginx:latest
docker.io/library/nginx:latest

启动镜像 nginx,（下面81端口是主机的端口，也就是是服务器的端口，80是容器的端口，-d 是在后台运行。）

docker run -d -p 81:80 nginx

[root@VM-0-2-centos ~]# docker ps -a
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
[root@VM-0-2-centos ~]# docker run -d -p 81:80 nginx
78b323b556d3e71814594d803e69202b70c0979b3b6bde60198ec523bfe89fdc

进入镜像

docker exec -it 3adfac31653d bash

CONTAINER ID   IMAGE          COMMAND                  CREATED              STATUS              PORTS     NAMES
3adfac31653d   7baf28ea91eb   "/docker-entrypoint.…"   About a minute ago   Up About a minute   80/tcp    tender_cannon
[root@VM-0-2-centos ~]# docker exec  --help

Usage:  docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

Run a command in a running container

Options:
  -d, --detach               Detached mode: run command in the background
      --detach-keys string   Override the key sequence for detaching a container
  -e, --env list             Set environment variables
      --env-file list        Read in a file of environment variables
  -i, --interactive          Keep STDIN open even if not attached
      --privileged           Give extended privileges to the command
  -t, --tty                  Allocate a pseudo-TTY
  -u, --user string          Username or UID (format: <name|uid>[:<group|gid>])
  -w, --workdir string       Working directory inside the container
[root@VM-0-2-centos ~]# docker exec -it  3adfac31653d bash
root@3adfac31653d:/# ls