Enfrentando o Docker em ambientes de desenvolvimento

Esta palestra descreve as semelhanças entre o esquema de virtualização comum e a virtualização com containers, introduz o Docker Engine e suas ferramentas como meio de agilizar e padronizar a configuração de ambientes de desenvolvimento.

Transcript

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7. 7JSUVBMJ[BÇÄP
   Host OS (Windows, Linux, OSX)
   VM A (Guest OS) VM B (Guest OS)
   Virtualization provider (VMWare, Virtualbox)
   Dependencies (SO, bins) Dependencies (SO, bins)
   App A App B
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8. Docker?
   

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10. Containers Linux
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    Host OS (Windows, OSX)
    VM (Guest OS + Docker Engine)
    Virtualization provider (VMWare, Virtualbox)
    MySQL 

    (LXC Container)
    App
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    Host OS (Linux)
    Docker Engine
    MySQL 

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17. %PDLFS)VC

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18. docker pull phpunit/phpunit
    

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21. 1 FROM ubuntu:14.04
    2
    3 # Install Python.
    4 RUN apt-get update
    5 RUN apt-get install -y python python-dev python-pip python-virtualenv
    6 RUN rm -rf /var/lib/apt/lists/*
    7
    8 # Define working directory.
    9 WORKDIR /data
    10
    11 # Define default command.
    12 CMD ["bash"]
    Dockerfile
    

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24. 1 FROM ubuntu:14.04
    2
    3 # Install Python.
    4 RUN \
    5 apt-get update && \
    6 apt-get install -y python python-dev python-pip python-virtualenv && \
    7 rm -rf /var/lib/apt/lists/*
    8
    9 # Define working directory.
    10 WORKDIR /data
    11
    12 # Define default command.
    13 CMD ["bash"]
    Dockerfile
    Boa Prática
    

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27. docker run --name meubanco mariadb
    

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28. DEMO
    

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33. docker-machine create dev --driver virtualbox
    

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34. docker-machine start dev
    

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35. eval “$(docker-machine env dev)”
    

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36. DEMO
    

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40. 1 wordpress:
    2 image: wordpress
    3 links:
    4 - db:mysql
    5 ports:
    6 - 80:80
    7 working_dir: /var/www/html
    8 volumes:
    9 - .:/var/www/html/wp-content/themes/development
    10 db:
    11 image: mariadb
    12 environment:
    13 MYSQL_ROOT_PASSWORD: example
    docker-compose.yml
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41. 1 python:
    2 build: ./Dockerfile

    3 volumes:
    4 - .:/data
    docker-compose.yml
    

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42. docker-compose up
    

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43. DEMO
    

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45. Pontos positivos
    • Mesmo ambiente em dev e prod
    • Dependências facilmente atualizadas
    • Leve e rápido
    • Possibilidade de compor containers
    

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46. Pontos negativos
    • APIs mudam muito rápido
    • Conceito de containers é difícil de entender
    • Comandos muito extensos, difícil memorização
    

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47. Vagrant x Docker
    • Vagrant + Provisionamento é difícil de atualizar
    • Containers são bem mais leves e com boot mais rápido
    

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55. 5FN
    

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56. Tutum Codeship
    DigitalOcean
    

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57. VALEU!
    vilar.cc/about
    

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