1. 直接通过docker拉取镜像遇到的问题：熟悉的timeout！！！
sysuygm@sysuygm:~$ docker pull mysql:5.7
5.7: Pulling from library/mysql
85b1f47fba49: Pulling fs layer
5671503d4f93: Download complete
3b43b3b913cb: Download complete
4fbb803665d0: Waiting
05808866e6f9: Waiting
1d8c65d48cfa: Waiting
e189e187b2b5: Waiting
02d3e6011ee8: Waiting
2d0f3914273e: Waiting
b7de9fbb86ba: Waiting
error pulling image configuration: Get https:///v2/library/mysql/blobs/sha256:dd0afb9bc4a99c70cdda8002ef2f1816405a795ee28faa0debd633f3380f8c4c: dial tcp 34.225.121.244:443: i/o timeout
sysuygm@sysuygm:~$ docker pull mysql:5.7
Error response from daemon: Get https:///v2/library/mysql/manifests/5.7: Get https:///token?scope=repository%3Alibrary%2Fmysql%3Apull&service=: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
sysuygm@sysuygm:~$ docker pull mysql:5.7
Error response from daemon: Get https:///v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
sysuygm@sysuygm:~$ docker pull mysql:5.7
5.7: Pulling from library/mysql
Get https:///v2/library/mysql/manifests/sha256:94ed2fa3857cc98ec8d680aedfd5a05ea5a3ea954f062edbdc0443d0f53a428e: dial tcp 54.152.209.167:443: i/o timeout
sysuygm@sysuygm:~$ docker pull mysql:5.7
Error response from daemon: Get https:///v2/library/mysql/manifests/5.7: dial tcp 34.200.28.105:443: i/o timeout
sysuygm@sysuygm:~$ docker pull mysql:5.7
Error response from daemon: Get https:///v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
sysuygm@sysuygm:~$ docker pull mysql:5.7
Error response from daemon: Get https:///v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
sysuygm@sysuygm:~$ docker pull mysql:5.7
Error response from daemon: Get https:///v2/library/mysql/manifests/5.7: Get https:///token?scope=repository%3Alibrary%2Fmysql%3Apull&service=: net/http: request canceled while waiting for connection (Client.Timeout exceeded while
2. 通过国内镜像/library库下载，下载速度快到感人！
sysuygm@sysuygm:~$ docker pull /library/centos:latest
latest: Pulling from library/centos
d9aaf4d82f24: Downloading [> ] 526.4kB/73.39MB
^C
sysuygm@sysuygm:~$ docker pull /library/mysql:5.7
5.7: Pulling from library/mysql
85b1f47fba49: Pull complete
5671503d4f93: Pull complete
3b43b3b913cb: Pull complete
4fbb803665d0: Pull complete
05808866e6f9: Pull complete
1d8c65d48cfa: Pull complete
e189e187b2b5: Pull complete
02d3e6011ee8: Pull complete
d43b32d5ce04: Pull complete
2a809168ab45: Pull complete
Digest: sha256:a0423a7d021b7a7775f1d2db1014bd15fde029f538c1f8d97c9832aa4a25209f
Status: Downloaded newer image for /library/mysql:5.7
sysuygm@sysuygm:~$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest f2a91732366c 2 weeks ago 1.85kB
/library/mysql 5.7 5709795eeffa 5 weeks ago 408MB
需要注意的是：mysql镜像名的前缀不能忘记，否则报错！
完整的名字： /library/mysql:5.7
sysuygm@sysuygm:~$ docker run -p 3306:3306 --name mysql2 -e MYSQL_ROOT_PASSWORD=root -d mysql:5.7
Unable to find image 'mysql:5.7' locally
docker: Error response from daemon: Get https:///v2/library/mysql/manifests/5.7: Get https:///token?scope=repository%3Alibrary%2Fmysql%3Apull&service=: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers).
See 'docker run --help'.
sysuygm@sysuygm:~$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
sysuygm@sysuygm:~$ docker run -it --net host /library/mysql:5.7 "sh"
# mysql -h127.0.0.1 -P3306 -uroot -proot
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.20 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the
