Development using Docker

1. Development using Docker
2. About Me
3. oppositeOf Advanced
4. Trying to Solve
5. What is a Container
6. Process Overview
7. Dockerfile
8. Dockerfile Demo
9. Docker Compose
10. Docker-Compose Demo
11. File System 1
12. File System 2
13. Useful Commands
14. Results: The Good
15. Results: The Whoopsie Daisy
16. Other things to consider
17. Thanks
18. You Talked too Fast Moron

1 Development using Docker

An introduction to using Docker in development

2 About Me

3 oppositeOf Advanced

4 Trying to Solve

New project setup time could be better
Context switching time could be better
Developer's environments differ from production (Nginx, linux, etc)
Developer's environments become a complete mess (PHP 5.6/7.0, tomcat, node, etc)
Setup for designers and QA was frustrating and slow

5 What is a Container

A stand alone web app with everything (including OS) it needs to run
Akin to a compiled desktop application; it "just runs"
Isolated from other containers
👍 Easy to spin up and down
👍 If hacked - scorched earth

6 Process Overview

+----------------------------------------------+
| Docker Machine (kitematic, quick start term) |
|                                              |
+----------------------------------------------+

+---------------+        +---------------+
| Dockerfile    |        | Registry      |
|               +------->|               |
|               |        |               |
+---------------+        +-------+-------+
				 |
		     +-----------v-------------------------------------+
		     |                                                 |
		     |   +---------------+         +---------------+   |
		     |   | Docker-Compose|         | Local FS      |   |
		     |   |               |         |               |   |
		     |   | app, db,      +---------+ /config       |   |
		     |   | cache, system |         | /src          |   |
		     |   |               |         |               |   |
		     |   +---------------+         +---------------+   |
		     |                                                 |
		     +----------+--------------------------------------+
				|
			+-------v--------+
			| Jenkins        |
			+-------+--------+
				|
			+-------v--------+
			| Dokku (UAT)    |
			+----------------+

7 Dockerfile

Used to build a 'machine' (an image)
Dockerfile ➡️ image
$ docker build -t nginx-php .
$ docker push the.place.com:5000/nginx-php
hub.docker.com

8 Dockerfile Demo

9 Docker Compose

Used to build a 'network'
docker-compose.yml
$ docker-compose up &
$ docker-compose stop

10 Docker-Compose Demo

11 File System 1

Basic project layout

.
├── config               -> Overrides (if needed)
│   └── nginx.conf
├── docker-compose.yml   -> Environment file
├── htdocs               -> Mounted into the VM
│   ├── index.php
│   └── test.txt
├── logs                 -> Created / Written to by the VM
│   ├── access.log
│   ├── error.log
│   ├── nginx
│   └── php5-fpm.log
└── run.command          -> Double click for Designers

12 File System 2

File system bridge

                  +----+                                       
+-----------+     |    |     +------------+
| VM        |     |    |     | Host       |
|  /var/www +---->|    +----->  /var/www  | 
|           |     |    |     |            |
|           <-----+    <-----+            |
|           |     |    |     |            |
+-----------+     |    |     +------------+
                  +----+