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Create a database in a Docker container for local development

Start a Docker Container

$ docker run --name=goyuninfo --restart on-failure -d mysql/mysql-server

Connecting to MySQL Server from within the Container

Get initial root password:

$ docker logs goyuninfo 2>&1 | grep GENERATED
[Entrypoint] GENERATED ROOT PASSWORD: 5EjdAv(ucryHFyg3dOv,AmgUnZ

$ docker exec -it goyuninfo  mysql -uroot -p

Because the MYSQL_ONETIME_PASSWORD option is true by default, after you have connected a mysql client to the server, you must reset the server root password by issuing this statement:

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'your-new-password';
mysql> flush privileges;

If you want to pipe data into one of the command line tools, such as loading a dump, you will need to remove the -t from the command line, like this:

docker exec -i goyuninfo  mysql -uroot < dumpfile.sql

Set up TCP/IP access to Docker containers

Find out the IP address of your virtual network interface on your Linux machine:

[ec2-user@ip-172-16-0-86 ~]$ ip addr show docker0
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether 02:42:77:eb:d4:40 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever
    inet6 fe80::42:77ff:feeb:d440/64 scope link
       valid_lft forever preferred_lft forever

The IP address assigned to my virtual Docker interface is 172.17.0.1, this is the endpoint your client application will connect from; this is the IP address you will use to create a user in MySQL.

Determine the IP address assigned to your container instance:
[ec2-user@ip-172-16-0-86 ~]$ docker inspect goyuninfo | grep IPAddress
            "SecondaryIPAddresses": null,
            "IPAddress": "172.17.0.2",
                    "IPAddress": "172.17.0.2",

IP address of the container instance is 172.17.0.2, so that the connection will be 172.17.0.1 <-> 172.17.0.2.

Create a user for the client program to connect from 172.17.0.1

mysql> create user root@172.17.0.1 identified by '';
Query OK, 0 rows affected (0.01 sec)

mysql> grant all on *.* to root@172.17.0.1 with grant option;
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

Connect to your container instance as root with no password from your local mysql client:
[ec2-user@ip-172-16-0-86 ~]$ mysql -uroot -h 172.17.0.2
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 77
Server version: 8.0.22 MySQL Community Server - GPL

Copyright (c) 2000, 2020, 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 current input statement.

mysql>

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