Docker basics 1-two methods to download and formulate docker images:

1. The method of obtaining and downloading the mirror image of the specified version:

https://hub.docker.com/

Go to this place to search, and then you can see something like this

2. The second way, you can get all the mirror list information by installing the plug-
in. In the example, centos is taken as an example. If you query something else, just replace the centos below with the content you need.

curl -s https://registry.hub.docker.com/v1/repositories/centos/tags|jq|grep name

2.1 A plug-in (jq) needs to be installed before use

yum install jq

2.2centos mirror example

[root@centos77 ~]# curl -s https://registry.hub.docker.com/v1/repositories/centos/tags|jq|grep name
    "name": "latest"
    "name": "5"
    "name": "5.11"
    "name": "6"
    "name": "6.10"
    "name": "6.6"
    "name": "6.7"
    "name": "6.8"
    "name": "6.9"
    "name": "7"
    "name": "7.0.1406"
    "name": "7.1.1503"
    "name": "7.2.1511"
    "name": "7.3.1611"
    "name": "7.4.1708"
    "name": "7.5.1804"
    "name": "7.6.1810"

2.3 nginx mirror example

[root@centos77 ~]# curl -s https://registry.hub.docker.com/v1/repositories/nginx/tags|jq|grep name
    "name": "latest"
    "name": "1"
    "name": "1-alpine"
    "name": "1-alpine-perl"
    "name": "1-perl"
    "name": "1.10"
    "name": "1.10-alpine"
    "name": "1.10.0"
    "name": "1.10.0-alpine"
    "name": "1.10.1"
    "name": "1.10.1-alpine"
    "name": "1.10.2"
    "name": "1.10.2-alpine"
    "name": "1.10.3"
    "name": "1.10.3-alpine"
    "name": "1.11"
    "name": "1.11-alpine"
    "name": "1.11.0"
    "name": "1.11.0-alpine"

2.4 After obtaining the mirror list information, the content in the list can be downloaded

Example:
Take downloading 1.11 of nginx as an example to download

[root@centos77 ~]# docker pull nginx:1.11

2.5 View the method of downloading the mirror:

[root@centos77 ~]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
busybox               latest              b97242f89c8a        8 days ago          1.23MB
httpd                 latest              683a7aad17d3        9 days ago          138MB
debian                latest              e7d08cddf791        10 days ago         114MB
centos                latest              300e315adb2f        6 weeks ago         209MB
mysql                 5.7                 413be204e9c3        9 months ago        456MB
portainer/portainer   latest              2869fc110bf7        10 months ago       78.6MB
tomcat                latest              a7fa4ac97be4        10 months ago       528MB
nginx                 latest              6678c7c2e56c        10 months ago       127MB
centos                6.8                 82f3b5f3c58f        22 months ago       195MB
centos                7.5.1804            cf49811e3cdb        22 months ago       200MB
nginx                 1.11                5766334bdaa0        3 years ago         183MB
[root@centos77 ~]#