Docker from a team perspective
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The document discusses the use of Docker to manage dependencies and enhance collaboration within development teams. It highlights the challenges of constant changes in project dependencies and how Docker streamlines the process through consistent environments across different platforms. The conclusion emphasizes that Docker significantly reduces downtime and simplifies project cooperation by clearly defining required environments.
Docker from a team perspective
- 1. Docker from a team perspective Edwin Vlieg - MoneyBird €
- 3. Ruby Postgres OSX Ruby Postgres OSX Ruby Postgres Linux UnicornProject UnicornProject UnicornProject
- 4. Ruby Postgres OSX Ruby Postgres OSX Ruby Postgres Linux UnicornProject UnicornProject UnicornProject We need GraphicsMagick
- 5. Ruby Postgres OSX Ruby Postgres OSX Ruby Postgres Linux UnicornProject UnicornProject UnicornProject You need GraphicsMagick! GM
- 6. OSX Ruby Postgres OSX Linux UnicornProject UnicornProject UnicornProject You need GraphicsMagick! GMRuby Postgres GM Ruby Postgres GM 30 minutes 15 minutes
- 7. Development • Always changing dependencies in projects • Keeping up with changes takes away productivity • Differences as small as a different patch level or different compile time argument can mean hours of debugging.
- 8. After development • Continuous Integration • Staging environment • Production environment
- 9. Ruby 2.1 Postgres OS UnicornProject Ruby 2.0 Redis Memcache ElasticSearch StorageProject Ruby 2.1 Postgres GM GhostScript PrinceXML
- 10. We tried • Automated provisioning of environments • Vagrant boxes with dependencies
- 11. OSX Ruby Postgres OSX Linux UnicornProject UnicornProject UnicornProject GMRuby Postgres GM Ruby Postgres GM Image
- 12. Image “A Docker image is a read-only template.”
- 13. StorageProject Ingredients Ubuntu OpenSSL Ruby Bundler GraphicsMagick PrinceXML Source code Image StorageProject Dockerfile FROM ubuntu RUN apt-get install openssl RUN apt-get install ruby RUN gem install bundler RUN apt-get install gm RUN princexml/install.sh ADD ./src/storage_project
- 14. Image • Create image from Dockerfile • Run image to create a container running the dependencies and source code • Result is the same on every host computer able to run a Docker host (Linux).
- 15. Ruby Postgres OSX Ruby Postgres OSX Ruby Postgres Linux UnicornProject UnicornProject UnicornProject ADD apt-get install gm
- 16. OSX Ruby Postgres OSX Linux UnicornProject UnicornProject UnicornProject Pull new image! GMRuby Postgres GM Ruby Postgres GM 30 seconds 30 seconds
- 17. Docker vs VMs App A Hypervisor (Type 2) Host OS Server Guest OS Bins/ Libs App A’ Guest OS Bins/ Libs App B Guest OS Bins/ Libs VM Guest OS Guest OS AppA Docker Host OS Server AppA Bins/Libs AppB AppB AppB AppB Container Bins/Libs
- 18. Backing services • We try to serve only 1 service in an image • Backing services like Postgres, Redis, ElasticSearch, Memcached have their own images
- 19. Conclusion • Docker makes dependency management and cooperation on projects way easier! • Less downtime during development and in production due to clear definition of required environment.