LEMP Stack with Docker-Compose

This repository contains a working example of a docker-compose.yml to create an NginX, MariaDB (MySQL), and PHP (7+) stack.

The files are annoted with explanations of what each line is doing. If something is not clear please raise an issue through GitHub and I'll do my best to explain.

To run the LEMP stack you will need Docker installed as well as Docker-Compose.

You then just need to run:

docker-compose up

and then go to the IP address of the lemp-nginx container. You can find the IP address easily with this ugly command:

docker inspect -f "{{.Name}}: {{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}" $(docker ps -aq) | cut -c2-

Docker Compose

Docker Compose is a far easier way of managing multiple containers than the standard docker commands. It takes it's configuration from a YAML file.

The current Docker Compose configuration format is version 3, but version 2 is currently more popular.

Once a docker-compose.yml file is created run:

docker-compose up

To run it daemonised (in the background) add -d:

docker-compose up -d

If running in the background / daemonised, you can view the logs with:

docker-compose logs

To build the images without running them, run:

docker-compose build

A Little Introduction to Docker

Basic Docker commands

Pull latest CentOS image

docker pull centos

Pull CentOS 6 image

docker pull centos:6

Pull latest official Ubuntu image and run default ENTRYPOINT (/bin/bash)

docker run -it ubuntu

Run alternative ENTRYPOINT on latest Ubuntu

docker run -it ubuntu /bin/sh

Execute command on running container

For example, run the yes command on Ubuntu.

docker exec -it ubuntu yes

Managing containers

List all containers

docker ps

Remove Docker container

docker rm <container name or hash>

List Docker networks

docker network ls

Remove Docker network

docker network rm <network name>

List Docker images

docker images

Remove Docker image

docker rmi <image name or hash>

List Docker volumes

docker volume ls

Remove Docker volume

docker volume rm <volume name>

Build Docker image from Dockerfile

All is needed is to specify the path of the Dockerfile.

docker build ./

Show container information

docker inspect <container name or hash>

Pushing to DockerHub

Once a custom image has been built it can be pushed to DockerHub or another Docker repository.

Images can be tagged with a version or note. This is useful for when you have variations on a base image, eg. you could have MariaDB on one and MySQL on another.

Tag built Docker image with name

docker tag <hash> dockerhubusername/example-image:mariadb

docker tag <hash> dockerhubusername/example-image:mysql

Tag built Docker image with version number

docker tag <hash> dockerhubusername/example-image:1

Push to DockerHub

docker push dockerhubusername/example-image:1

docker push dockerhubusername/example-image:mysql