1. Local Installation 

like Acquia Dev Desktop, MAMP, LAMP, XAMP, etc.

• Hard to install
• A lot of dependencies on Operating System
• No multiple Versions
• Never ever the same as production

2. Virtual Machines

Vagrant, VirtualBox, etc.

• Installing/Provisioning takes a lot of time
• Needs a lot of space & resources
• Hard to build the same system as production

3. Docker

• No installation per site/container
• Less usage of space and resources
• Can be the exact same as in production!

Virtual Machines

Docker

Docker Image

• Fully Provisioned
• Includes everything needed to run
• Can build on top of another Image
• Built via Dockerfile

Docker Image Registry

• Provides Docker Images
• Saves them as Layers (faster sync)
• Public one: hub.docker.io
• Private ones

Docker Container

• Built from Docker Image
• Is what actually runs
• Can mount external files

OK, but why?

1. Provisioning happens before (ultra fast start of containers)
2. Everything needed to run is inside an Image
3. Runs everywhere

Why Docker?

1. No long waiting
2. Everything already there
3. Runs on Linux, Mac, Windows

Why Docker for Local Development?

How to use Docker

1. Build Docker Images yourself
2. Use existing Docker Images

Build Docker Images yourself

• You need knowledge about Hosting
• You need knowledge about Docker

Existing Docker Images

• NOT: hub.docker.com/_/drupal/
   
• github.com/peperoni60/drupal-docker
• dropdock.io
• www.kalabox.io
• drude.io
• docker4drupal.org
• dockerdrupal.readthedocs.io
   
• amazee.io

• All Services in one:
  PHP, Nginx, Varnish, Solr, Drush, Composer, Console, Xdebug, Blackfire
• Fully Maintained & Supported
• Supports custom nginx, solr configs
• All configs for Drupal
• Nice URLs
• Easy Helper Tools