Docker

From ZERO to NONZERO

WHO AM I?

- Francesco Lo Franco - @__kekko- Software Developer

@chupamobile.com- PUG Roma member since 2014

WHAT IS DOCKER?

❏ OPEN SOURCE

❏ Powered by GOLANG

❏ Virtualization

95,000,000$ROUND - april 2015

500,000,000$Estimated Market Value

NUMBERS But, above all...

Community!

❏ ~26.000 stars❏ ~1200 contributors❏ ~1000 issues

How Docker works?

Installing Docker

❏ Docker Daemon❏ Docker Client❏ Client HTTP

What is an Image?

FROM ubuntu:14.04RUN apt-get updateRUN apt-get install -y curl nginx

Dockerfile

$ docker build .

What do we do with an image?

We create a container based on it!

What is a Container?

An instance of an image

What can we do with a Container?

❏ execute process in bg❏ execute task

Process in bg practically

$ docker run --name image_name

-p 8080:80

-d

nginx redis mysql elasticsearch ...

execute task example

Running composer install with

HHVM without having an HHVM as

dependency in my project

(HHVM is faster with composer!)

FROM ubuntu:14.04ENV HOME /root# Install DepsRUN apt-get install -y -qq git curl wget hhvm

# Install composerRUN bash -c "wget http://getcomposer.org/composer.phar && mv composer.phar /usr/local/bin/composer"

WORKDIR /srv

ENTRYPOINT ["hhvm", "/usr/local/bin/composer"]

execute task practically

$ docker run

-v `pwd`:/srv

docker-composer install

VANTAGGI? ▸ no overhead▸ very fast▸ a lot of pre-built images▸ microservices?▸ AWS, Google etc▸ Tutum, Compose,

Machine, Swarm etc...

THANKS!You can find me at▸ @__kekko▸ lofrancofrancesco@gmail.com