“Docker" First Try (3)

My studied Evidence

■upload images created locally into Docker HUB's repository

$ docker push xxxxxx/sample:latest
The push refers to repository [docker.io/xxxxxx/sample]
xxxxxx: Pushed 
latest: digest: sha256:///

then,confirmed it from DockerHUB site.

■What is "Docker compose"?

command thaw will manage several container easily,Just like port setting,volume mount setting,and NW setting between containers.

(1)Installation Docker compose

$ sudo curl -L "https://github.com/docker/compose/releases/download/1.24.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   617    0   617    0     0   3427      0 --:--:-- --:--:-- --:--:--  3427
100 15.4M  100 15.4M    0     0  23.3M      0 --:--:-- --:--:-- --:--:-- 23.3M

(2)added privilege

$ sudo chmod +x /usr/local/bin/docker-compose

(3)confirmed

$ docker-compose version
docker-compose version 1.24.1, build 4667896b
docker-py version: 3.7.3
CPython version: 3.6.8
OpenSSL version: OpenSSL 1.1.0j  20 Nov 2018

★below link is helpful to Reverse resolution
https://qiita.com/souichirou/items/6e701f6469822a641bdd

■TRY TO USE by creating wordpress environment via docker compose.

$ touch docker-compose.yml
$ chmod +x docker-compose.yml
$ cat docker-compose.yml 
version: '3'

services:
        wordpress:
        image:wordpress
        ports:
        - 80:80
        environment:
        WORDPRESS_DB_HOST: mysql:3306
        WORDPRESS_DB_USER: wp_user
        WORDPRESS_DB_PASSWORD: wp_pass
        depends_on:
        - mysql

mysql:
        image: mysql:5.7
        environment:
        MYSQL_ROOT_PASSWORD: sample
        MYSQL_DATABASE: wordpress
        MYSQL_USER: wp_user
        MYSQL_PASSWORD: wp_pass