Docker as development environment
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Docker as Development Environment
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Docker as development environment
- 2. Bruno de Lima e Silva Games Graduate degree in mobile Parto Humanizado Crowdmobi, Trakto Qviky Coding Dojo
- 6. VirtualizationVirtualization Why I should use it?
- 7. VirtualizationVirtualization You don't need to install everything
- 9. VirtualizationVirtualization How to do it?
- 10. ● What? ● “Here it works”, who’s never? ● New team member ● Provision != drean ● Overhead Same as production environment
- 11. Docker
- 12. Docker “Docker containers wrap up a piece of software in a complete filesystem that contains everything it needs to run: code, runtime, system tools, system libraries – anything you can install on a server. This guarantees that it will always run the same, regardless of the environment it is running in.” - Docker docs What is it?
- 13. Docker How it works? ● Docker Hub ● Images ● Build Images ● Share host resources
- 14. Docker Is it better?
- 15. Docker How run docker commands docker run <image> command
- 16. Docker and Ruby ● Create a ruby file (hello.rb), with this: ● Run it with docker docker run --rm -v "$(pwd)":/app -w /app ruby:2.2 'ruby hello.rb' puts ‘The Power of Docker’
- 17. and Node ● Create a node file (hello.js), with this: ● Run it with docker Docker docker run --rm -v "$(pwd)":/app -w /app node 'node hello.js' console.log(‘Node works too’);
- 18. ● To link the app we need to start postgres and give it a name ● Then, start the app linking it to postgres Docker docker run -d --name db -e POSTGRES_PASSWORD=123456 postgres docker run -d -P --link db:dbLink image command and PostgreSql
- 19. FROM ruby:2.2 RUN apt-get update && apt-get install -y nodejs --no- install-recommends && rm -rf /var/lib/apt/lists/* ENV RAILS_VERSION 4.2.3 RUN gem install rails --version $RAILS_VERSION WORKDIR $app ADD . $app EXPOSE 3000 CMD ["bundle", "exec", "rails", "s", "-b", "0.0.0.0"] Dockerfile
- 20. ● Lots of commands ● Lots of params ● I don’t want to remember that all just to run the app ● and that Dockerfile Docker is getting harder
- 21. Docker-Compose
- 22. ● Compose multiple containers ● Just configure it ● Run a single command Docker-Compose docker-compose up
- 23. Sample web: build: . ports: - "5000:5000" volumes: - .:/code links: - redis redis: image: redis Docker-Compose
- 24. Ruby and Rails On Dockercompose
- 25. db: image: postgres ports: - "5432:5432" environment: - POSTGRES_USER=postgres - POSTGRES_PASS=postgres Ruby and Rails Start from DB
- 26. FROM ruby:2.2 RUN apt-get update && apt-get install -y nodejs mysql-client postgresql-client sqlite3 --no-install-recommends && rm -rf /var/lib/apt/lists/* ENV RAILS_VERSION 4.2.3 RUN gem install rails --version $RAILS_VERSION ENV app /usr/src/app RUN mkdir $app WORKDIR $app ENV BUNDLE_PATH /box ADD . $app EXPOSE 3000 CMD ["bundle", "exec", "rails", "s", "-b", "0.0.0.0"] Ruby and Rails Create app image
- 27. #!/bin/bash bundle check || bundle install bundle exec rails s -b 0.0.0.0 -p 3000 rm -f tmp/pids/server.pid Ruby and Rails Create app start script
- 28. box: image: busybox volumes: - /box Ruby and Rails Add busybox
- 29. web: &default build: . command: ./script/start.sh volumes: - .:/usr/src/app volumes_from: - box ports: - "3000:3000" links: - db Ruby and Rails Create web
- 30. worker: << *default command: bundle exec rake jobs:work Ruby and Rails Create workers
- 31. mailcatcher: hostname: mailcatcher image: "schickling/mailcatcher" command: mailcatcher -f --ip=0.0.0.0 ports: - "1080:1080" - "1025:1025" Ruby and Rails Create MailCatcher
- 34. +BrunoDeLimaS Bruno de Lima @brunodles That’s all folksThat’s all folks +BrunoDeLimaS Bruno de Lima @brunodles https://github.com/Padawan-org/Padawan-Docker