About

The automated build docker LEMP image “linuxconfig/lemp” can be used as a testing and also as a production environment for a dynamic PHP applications. It comprises of Debian GNU/Linux, lightweight and yet powerful Nginx webserver, MariaDB relational database management system and PHP scripting language.

Deployment

The deployment of “linuxconfig/lemp” docker image is a fairly simple procedure. Let' start by creating a sample PHP website with a MariaDB connection handle:
<?php
$dbh = mysqli_connect('localhost', 'admin', 'pass');
if (!$dbh) {
    die('Could not connect: ' . mysqli_error());
}
echo 'Connected successfully to MariaDB database';
mysqli_close($dbh);
?>
Save the above code into index.php file and within a new html directory. Alternatively,html directory may contain your desired PHP application:
$ mkdir html
$ vi html/index.php
$ ls html/
index.php
At this stage we are ready to deploy “linuxconfig/lemp” docker image:
$ sudo docker run --name=lemp -dP -v $PWD/html:/var/www/html linuxconfig/lemp
fa3be4d751519fe5e28b022f571b18a79025a7db35865d1de46e161067e99bd9
By executing the above command we have created and started a new docker container lemp. At the same time we have also mounted our website development directory html as nginx's root directory. Both, MariaDB and Nginx ports are now bound to a host system's random port. The both local ports can now be used to access both MariaDB and Nginx services :
$ sudo docker port lemp
80/tcp -> 0.0.0.0:49156
3306/tcp -> 0.0.0.0:49155

Nginx Access

At this stage Nginx webserver and our website can be accessed via ports given by $ sudo docker port lemp command. Use command line or your browser to navigate to http://localhost:49156 URL:
$ curl -i http://localhost:49156
HTTP/1.1 200 OK
Server: nginx/1.6.2
Date: Sun, 10 May 2015 01:12:08 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive

Connected successfully to MariaDB database

MariaDB Access

The MariaDB database can be accessed via admin user and default password pass. As previously, first we need to obtain the host system port number linked to MariaDB database within a docker image by using $ sudo docker port lemp command. Next, we can connect to database:
mysql -uadmin -ppass -h 127.0.0.1 -P49155
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 3
Server version: 10.1.23-MariaDB-8 Debian 9.0

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> 

Additional Information

Reset MariaDB user password

The below command will set a new password 123for theadmin user :
SET PASSWORD FOR 'admin'@'%' = PASSWORD('123');

Restart lemp stack

$ sudo docker exec lemp service supervisor restart

Container Access

While your lemp container is running it can be access by:
$ sudo docker exec -it lemp /bin/bash
root@733ae4bebf83:/#
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