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Docker for WebDevs @cassilup, May 2017

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@cassilup

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No content

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@cassilup http://www.example.com

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@cassilup http://www.example.com www.example.com:80

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@cassilup http://www.example.com www.example.com:80 127.0.0.1:80

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@cassilup http://www.example.com www.example.com:80 127.0.0.1:80 ./node index.js

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How we used to do it XAMPP anyone? (2002) Cross-Platform (X), Apache (A), MySQL (M), PHP (P) and Perl (P) Manual installs. Hard to Config. Bloated OS. It did the job, though. @cassilup

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Vagrant anyone? (2013) “Person without a settled home or regular work who wanders from place to place and lives by begging.” -- Google Clean OS. Took a lot of space. Several projects → no space left on HDD. Resource consuming → CPU + RAM Matter of Minutes Dev Envs How we used to do it (contd.) @cassilup

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Docker (2013) Containers Namespace in the OS Just run your process(es) carefree Dockerfile How the cool kids do it (2017) @cassilup

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Virtual Machine Stack Container Stack https://docs.docker.com/get-started/#container-diagram

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@cassilup Hours Minutes Seconds

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https://semaphoreci.com/community/tutorials/dockerizing-a-php-application

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$ docker-machine @cassilup

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$ docker-machine @cassilup $ docker

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@cassilup source

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@cassilup Image Container

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@cassilup Image Container Tag ID

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@cassilup Image Container Image Tag ID

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Demo @cassilup https://github.com/cassilup/express-cowsay

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$ docker-machine @cassilup $ docker

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@cassilup $ docker build # builds an image $ docker ps # lists containers $ docker run # runs image $ docker stop # stops container $ docker rm # removes container $ docker images # lists images

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$ docker-machine @cassilup $ docker $ docker-compose

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Why you should consider it @cassilup

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Development Fast start Automated config. Config as code. Easy context switching Lower resources usage Why you should consider it @cassilup

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Development Fast start Automated config. Config as code. Easy context switching Lower resources usage Why you should consider it @cassilup Deployment Cattle as pets. “Works on my machine” less of a problem Same env as in production.* * almost Microservices (AWS Lambda, Quay.io, now.sh) Continuous Delivery

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https://docs.docker.com/get-started @cassilup

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Thank you! :) Come say hi! @cassilup

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http://www.docker.com http://bit.ly/2qfGsto – Docker intro https://docs.docker.com/engine/reference/builder https://usersnap.com/blog/docker-for-web-developers https://github.com/laradock/laradock – Laradock (PHP) https://nodejs.org/en/docs/guides/nodejs-docker-webapp http://jdlm.info/articles/2016/03/06/lessons-building-node-app-docker.html https://semaphoreci.com/community/tutorials/dockerizing-a-php-application https://stackoverflow.com/questions/16047306/how-is-docker-different-from-a-normal-virtual-machine Resources @cassilup