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• What is Docker?

• Docker vocabulary

• Docker's past, present, and future

• Your future in the cloud

• Questions

Docker.com says

Docker is an open platform for developers and sysadmins to build, ship, and run distributed applications.

Docker Engine

A portable, lightweight runtime and packaging tool

Docker Hub

A cloud service for sharing applications and automating workflows

Less portable, minimal overhead

Most portable,
lots of overhead

Manual
configuration

Traditional VMs

CM tools

Images

Saved states of containers. 

$ docker history atbaker/sd-django
IMAGE               CREATED             CREATED BY                                      SIZE
2c69173d3c3e        6 months ago        /bin/sh -c apt-get clean && rm -rf /var/lib/a   7 B
cf07ee82aaa6        6 months ago        /bin/sh -c chown root /opt/sd_client.py /var/   1.162 kB
4a3046bdcd25        6 months ago        /bin/sh -c #(nop) ADD file:0854b61af5a8f7051c   259 B
519ac326d2de        6 months ago        /bin/sh -c #(nop) ADD file:03065d55ff7e64caa9   896 B
5f87ccb7c84f        6 months ago        /bin/sh -c chown root /etc/service/gunicorn/r   871 B
aa069b102781        6 months ago        /bin/sh -c #(nop) ADD file:4683e735d1f7a57fd5   864 B
da64e86860ea        6 months ago        /bin/sh -c mkdir /etc/service/gunicorn          7 B
9109839d1887        6 months ago        /bin/sh -c touch /var/log/gunicorn/error.log    7 B
5e628a947f45        6 months ago        /bin/sh -c touch /var/log/gunicorn/access.log   7 B
57b25445ef0b        6 months ago        /bin/sh -c mkdir /var/log/gunicorn              7 B
dc008bbf46e8        6 months ago        /bin/sh -c /var/www/venv/bin/django-admin.py    747.5 kB
d75444a0b891        6 months ago        /bin/sh -c /var/www/venv/bin/django-admin.py    45.49 kB
4b6f8f5021aa        6 months ago        /bin/sh -c #(nop) ENV SECRET_KEY=no-so-secret   0 B
93a3749a8817        6 months ago        /bin/sh -c #(nop) ENV DJANGO_SETTINGS_MODULE=   0 B
3d67fca00fe8        6 months ago        /bin/sh -c #(nop) ENV PYTHONPATH=$PYTHONPATH:   0 B
1b2851b048f7        6 months ago        /bin/sh -c /var/www/venv/bin/pip install -r /   30.19 MB
7c9a3b2daefb        6 months ago        /bin/sh -c virtualenv /var/www/venv             11.62 MB
6b468cc8cefe        6 months ago        /bin/sh -c pip install virtualenv               1.921 MB

Dockerfiles (builder)

Series of commands to build an image

# Spin-docker example dockerfile for a Django project

# Use phusion/baseimage as base image
FROM phusion/baseimage:0.9.8

MAINTAINER Andrew T. Baker <andrew@andrewtorkbaker.com>
# Add the Django app and install its requirements
ADD sd_sample_project /var/www/django
RUN apt-get install -y python-pip
RUN pip install virtualenv
RUN virtualenv /var/www/venv
RUN /.../venv/bin/pip install -r /.../requirements.txt
...

Docker

Repository

Git

Repository

collection of commits

Container

Checkout

used for local execution

Docker Hub

GitHub

popular remote server

Image

Commit

saved state

• dotCloud side project revealed at PyCon 2013 
• Since then:
  • 100 million Docker Engine downloads
  • 45,000 "Dockerized" applications in Docker Hub
  • 720+ community contributors
  • 18,000+ GitHub stars
• dotCloud changes its name to Docker

1.0 released in June 2014

Source: Docker tweet

Source: Docker blog

Development environments

Platform-as-a-Service (PaaS)

Continuous Integration (CI)

Educational sandboxes

And the tools are getting better too

boot2docker

Docker library images

GUIs

Cloud-agnostic hosting

Container-specific hosting

Container-specific hosting

Container-specific hosting

2014

• Get to 1.0 (production-ready)
• Establish partnerships
• Round out some rough edges (v1.3)

• Make Docker easier to use
• Popularize best practices for scaling
• "Include more batteries" (w/o cannibalizing ecosystem)
• Address security concerns

A new player

Cloud computing average monthly cost

Source: RBC Capital / Business Insider

Switching clouds
in minutes for...

• Service outages
• CPU/Network/IO performance 
• Special pricing tailored just for you

Containers give you the flexibility to do it

About you