Developers need to be able to run an application on an environment as closely matched to production as possible. We can already do this through Vagrant.The problem with Vagrant is that it is slow and takes a lot of resources both in cpu and space. Docker doesn't have this problem and gives you a tool to create hundreds of different application environments on the same machine and distribute them through a registry. As Git replaced SVN, so has Docker replaced vagrant for application environment setups.Leave the future behind, own today (like a boss).

2. PHPBenelux Wednesday, October 22, 2014

4. ** VVaaggrraanntt iiss aa MMaannaaggeerr ffoorr VVMMss
** VVaaggrraanntt iiss AAWWEESSOOMMEE!!
** VVaaggrraanntt SSiimmpplliiffiieedd oouurr lliivveess ttrreemmeennddoouussllyy

6. ● ** sseerrvveerr vviirrttuuaalliizzaattiioonn iiss ssllooww
● ** hhaarrdd ttoo ddiissttrriibbuuttee ((ccoommppaarreedd ttoo ddoocckkeerr))
● ** bbaassee bbooxx ++ vvaaggrraanntt pprroovviissiioonn ((ppuuppppeett,, aannssiibbllee,,
ssaallttssttaacckk))
● ** vvaaggrraanntt ppaacckkaaggee ----bbaassee [[hhaasshh]] ----oouuttppuutt
[[bbooxxnnaammee..bbooxx]]
● ** ffiixxeedd mmeemmoorryy ccoonnssuummppttiioonn

7. ● ** ddiisskk ssppaaccee hhoogg
● ** sseerrvviiccee iinnssttaallll // rreemmoovvee ttrriiaallss aarree
eexxppeennssiivvee
● ** ddeessttrrooyy ++ uupp iiss ccooffffeeee ttiimmee
● ** hhyyppeerrvviissoorr aabbssttrraaccttss aann eennttiirree ddeevviiccee
● ** eexxppeennssiivvee eemmuullaattiinngg vviirrttuuaall hhaarrddwwaarree

8. IItt aaiinn''tt aallll bbaadd!!
** EExxcceelllleenntt ffoorr mmaannuuaall tteessttiinngg
** EExxcceelllleenntt ffoorr SSeelleenniiuumm GGrriidd
** EExxcceelllleenntt ffoorr ttaakkiinngg aann OOSS tteesstt ddrriivvee
** EExxcceelllleenntt ffoorr rruunnnniinngg nnoonn lliinnuuxx aappppss
** AAnndd pprroobbaabbllyy aa lloott mmoorree!!
BBuutt iitt aaiinn''tt ggoooodd ffoorr ......

9. RRuunnnniinngg oorr
ddeevveellooppiinngg
aa LLiinnuuxx
aapppplliiccaattiioonn

10. PPuurrrriinngg pp oowweerr!!!!!!

11. "Docker iiss aann ooppeenn ppllaattffoorrmm ffoorr ddeevveellooppeerrss
aanndd ssyyssaaddmmiinnss ttoo bbuuiilldd,, sshhiipp,, aanndd rruunn
ddiissttrriibbuutteedd aapppplliiccaattiioonnss..""

12. * dedicated tool to help build ssttaabbllee aapppplliiccaattiioonn
eennvviirroonnmmeennttss
** ddiissttrriibbuuttee tthhoossee eennvviirroonnmmeennttss eeaassiillyy
** llooww ccoosstt iinnssttaallll // rreemmoovvee sseerrvviicceess

13. > whoami_
* built on top of LLXXCC ((ccoonnttaaiinneerr tteecchhnnoollooggyy))..
** uusseess ffiillee ssyysstteemm,, ssttoorraaggee,, CCPPUU,, RRAAMM,, aanndd ssoo oonn
** jjuusstt aabbssttrraacctt tthhee ooppeerraattiinngg ssyysstteemm kkeerrnneell

14. > ls effect_
** mmoorree eeffffiicciieenntt iinn rreessoouurrccee tteerrmmss
** lleeaavvee bbeehhiinndd 9999..99%% VVMM jjuunnkk
** 44-66 ttiimmeess mmoorree sseerrvveerr aapppplliiccaattiioonn iinnssttaanncceess

15. Terminology
* Image
* Container
* Repository
* Registry

18. We don't need no stinking

19. We Need a Dockerfile
nickbelhomme/apache nickbelhomme/foo
FROM debian:wheezy
MAINTAINER Nick Belhomme,
contact@nickbelhomme.com
RUN apt-get update
RUN apt-get install -y apache2 wget
vim curl
# expose the ports
EXPOSE 80
FROM nickbelhomme/apache
RUN a2enmod rewrite
RUN apt-get install -y php5-common
libapache2-mod-php5 php5-cli php5-
intl php5-curl php5-pgsql
ADD dev/apache/application.conf
/etc/apache2/sites-available/
application.conf
RUN a2ensite application.conf

21. Actually we Need multiple Dockerfiles
1 FOR APACHE (+ PHP)
1 FOR a DB
1 PER Application
1 FOR NODE
1 FOR VARNISH
1 FOR MEMCACHED
1 FOR REDIS
1 FOR ...
Or use the Registry for pre-build images

22. Forge together
Using
Containers
docker run -d -P --name postgres nickbelhomme/postgres
docker run -d --link postgres:postgres --name applicationFoo -v
/home/nick/vhosts/foo/application:/var/www/vhosts/local.foo.com -p 49101:80
nickbelhomme/foo /usr/sbin/apachectl -D FOREGROUND

23. > docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e39 node:latest "grunt watch" 5 days ago Up 2 seconds applicationFoo-grunt
a2d applicationFoo:latest "apachectl 2 weeks ago Up 2 seconds 49101->80/tcp applicationFoo
bda postgres:latest "/usr/lib/postgresql 4 weeks ago Up 3 seconds 49155->5432/tcp
fooBar/postgres,applicationFoo/postgres,gooBar/postgres,postgres
http://local.foo.com:49101
/etc/hosts => Docker0-ip local.foo.com

24. > docker run --rm --link postgres:postgres nickbelhomme/postgres env
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
HOSTNAME=0bda3edb485e
POSTGRES_PORT=tcp://10.66.33.13:5432
POSTGRES_PORT_5432_TCP=tcp://10.66.33.13:5432
POSTGRES_PORT_5432_TCP_ADDR=10.66.33.13
POSTGRES_PORT_5432_TCP_PORT=5432
POSTGRES_PORT_5432_TCP_PROTO=tcp
POSTGRES_NAME=/loving_colden/postgres
HOME=/var/lib/postgresql
<?php host=' . getenv('POSTGRES_PORT_5432_TCP_ADDR') ?>

25. > docker logs –follow applicationFoo-grunt
Done, without errors.
Completed in 0.438s at Wed Oct 15 2014 19:06:28 GMT+0000 (UTC) - Waiting...
OK
>> File "rawJs/foo/form.js" changed.
Running "concat:js" (concat) task
File "./public/js/source.js" created.
Done, without errors.
Completed in 0.458s at Wed Oct 15 2014 19:11:34 GMT+0000 (UTC) - Waiting...
Running "watch" task

26. > docker start postgres applicationFoo applicationFoo-grunt
> docker stop postgres applicationFoo applicationFoo-grunt
#!/bin/bash
if [ "$1" = "start" ]; then
docker start postgres applicationFoo applicationFoo-grunt
exit
fi
if [ "$1" = "db" ]; then
docker run --rm --link postgres:postgres nickbelhomme/postgres env
exit
fi
if [ "$1" = "grunt" ]; then
docker logs --follow applicationFoo-grunt
exit
fi
> ./project start
> ./project stop
> ./project grunt
> ./project ...

27. Team distribution

28. > docker login
> docker push nickbelhomme/postgres
> docker pull nickbelhomme/postgres
> docker run [options] [container]
> develop

29. Now some bad
ass Super hero
Tips

30. > docker build -t nickbelhomme/foo .
> docker build –no-cache=true
> docker run --name applicationFoo
> docker run –rm ...
> docker run -w /var/www/vhosts/local.foo.com
> docker run -i -t nickbelhomme/foo /bin/bash
> docker run -v hostDir:containerDir

31. > docker rm $(docker ps -a -q)
> docker rmi $(docker images -a -q)
> docker rmi $(docker images -q --filter "dangling=true")

32. Change the default Docker network address
> cat /etc/default/docker
# Docker Upstart and SysVinit configuration file
# Customize location of Docker binary (especially for development testing).
#DOCKER="/usr/local/bin/docker"
# Use DOCKER_OPTS to modify the daemon startup options.
#DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4"
DOCKER_OPTS="—bip=10.66.33.10/24"
# If you need Docker to use an HTTP proxy, it can also be specified here.
#export http_proxy="http://127.0.0.1:3128/"
# This is also a handy place to tweak where Docker's temporary files go.
#export TMPDIR="/mnt/bigdrive/docker-tmp"

35. *Mounting volumes absolute FROM GUEST
docker run -v /c/Users:containerPath
* hosts file need to be set with 192.168.59.103

36. Lightweight Tiny Core Linux made for Docker containers.
Runs completely from RAM, weighs ~27MB, boots in ~5s

37. Remember:
Keep your docker
Images single
responsibility
http://blog.nickbelhomme.com | https://joind.in/12295