Symfony and Docker: a refreshing new experience

Recently, new configurators for Docker and Docker Compose have been added to Symfony Flex.
This means that Symfony can now transparently add the services and PHP extensions needed by your preferred packages!

You want to use Doctrine ORM? So you need a database and the related PDO extension! We’ve got you covered.
You use the mailer? So you want MailCatcher in your development environment? Let’s do this.
You want Panther? so you need Chrome and ChromeDriver! No problem!

But there is more: we now offer you Docker skeletons that take advantage of these new capabilities, and that you can use locally, but also in your CI system and in production!

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1. Symfony
   & Docker A new pattern to build fast
   and reliable web APIs
   A refreshing new development
   experience
   

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2. Kévin Dunglas
   ➔ Co-founder of Les-Tilleuls.coop
   ➔ Symfony Core Team
   ➔ Symfony Docker
   ➔ API Platform
   @dunglas
   

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3. API, cloud, PHP and JS experts
   ➔ Scop, 100% employee-owned ✊
   ➔ Democratically managed 💬
   ➔ 55 people 🦄
   ➔ France, Tunisia, Morocco 🌎
   ➔ contact@les-tilleuls.coop 💌
   Les-Tilleuls.coop
   

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4. Docker?!
   

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5. ➔ An OS-level virtualization platform
   ● Build: Dockerfile
   ● Share: Registry (hub)
   ● Run: Engine
   ➔ Software is packaged in containers
   ● Embedded binaries, libs, config files...
   ● Run in isolation
   ● Share a single OS kernel: ⬆performance
   Docker
   

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6. Why should you use Docker?
   ➔ Easy onboarding
   ● docker-compose up
   ● No more cumbersome and outdated README files
   ➔ Versioned, same software and configs everywhere: git pull
   ● locally, for the entire team
   ● CI
   ● staging
   ● prod
   ➔ Standardized, industry standard
   ➔ Great tooling, large ecosystem (GitHub Actions, Rancher, K8s...)
   ➔ (Almost) cross platform: Linux, Windows, Mac
   @dunglas
   

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7. Dockerfile
   

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8. ➔ Define and run multi-container apps
   ➔ In dev, staging and even prod (single host)
   ➔ Example for a Symfony app:
   ● PHP container
   ● Web server container
   ● DBMS container
   ● Cache server container
   ● …
   Docker Compose
   

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9. Docker Compose
   

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10. Docker and
    Symfony:
    an Old Story
    

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11. 7 years ago @ Sensiolabs
    I’ve been introduced to a brand
    new tool for hipsters during a
    workshop led by Jérémy
    Derussé at Sensiolabs.
    

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12. 6 years ago @ Les-Tilleuls.coop
    Vincent Chalamon proposed a
    patch adding Docker support to
    API Platform.
    

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13. 4 years ago
    I started the “Symfony Docker”
    installer and project skeleton
    (co-maintained by Maxime
    Helias).
    

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14. 2 years ago
    I contributed experimental Flex
    configurators for Docker and
    Docker Compose.
    

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15. Today @ SymfonyWorld 2021
    ➔ I’m very happy to announce the immediate availability of
    the official
    Symfony Docker integration
    @dunglas
    

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16. Symfony Flex
    

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17. Symfony Flex
    ➔ Composer plugin
    ➔ Generates the configuration of newly installed PHP
    packages
    ➔ New: Docker support
    ● Dockerfile: add PHP extensions, libs, binaries
    ● Docker Compose: adds new services
    @dunglas
    

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18. Docker Compose Flex Configurator
    

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19. Supported Packages
    Package Image
    symfony/orm-pack postgres
    symfony/mercure-bundle dunglas/mercure
    symfony/panther n/a (Dockerfile only)
    symfony/mailer schickling/mailcatcher
    blackfireio/blackfire-symfony-meta blackfire/blackfire
    More to come: PRs welcome!
    github.com/symfony/recipes
    

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20. Symfony CLI
    

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21. Symfony CLI
    ➔ Create new Symfony applications
    ➔ Deploy in SymfonyCloud
    ➔ Local web server, built-in TLS support
    ➔ Integration with Docker Compose
    ➔ Dev environments only
    ➔ Require local installations of PHP and Symfony CLI
    @dunglas
    

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22. Symfony CLI: Docker Compose Support
    

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23. Symfony CLI: Docker Compose Support
    

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24. Symfony Docker
    Skeleton
    

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25. Symfony Docker
    ➔ Docker-based skeleton and installer
    ➔ Prod ready
    ➔ Compatible with the Flex configurators
    ➔ No local dependencies, you just need Docker
    ➔ No bloat, readable config: only 2 containers
    ● PHP
    ● Web server
    ➔ Automatic TLS certificate generation and renewal
    ➔ Native support for Mercure and Vulcain
    @dunglas
    

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26. GitHub Template (optional)
    

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27. Get Started
    

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28. Deploy in prod (single host)
    

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29. Dockerfile Flex Configurator
    Support
    

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30. docker-compose exec php \
    composer req orm
    

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31. ➔ Free and Open Source web server
    ➔ Secure and super fast, written in Go
    ➔ Extensible
    ➔ Native PHP FPM support 😍
    ➔ Automatic HTTPS, even for localhost
    ➔ HTTP/3!
    ➔ Mercure, Vulcain, OAuth, OIDC
    modules
    ➔ Cloud native
    (API, hot config reloading…)
    Caddy Inside
    

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32. Kubernetes
    

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33. ➔ Free and Open Source container
    orchestration system
    ➔ Unlike Docker Compose: native
    cluster support
    ➔ Allows to scale deployments (with
    autoscaling support)
    ➔ Industry standard
    ➔ Managed clusters offered by AWS,
    GCP, Azure, DO, OVH, Scaleway…
    ➔ Battery included, but complex
    Kubernetes
    

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34. ➔ The Kubernetes package manager
    ➔ Like apt but, for Kubernetes
    ➔ Charts: packages for Kubernetes
    ➔ Graphical tools (Lens IDE, Ahoy)
    ➔ Templates for Kubernetes YAML
    manifests
    Helm
    

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35. Symfony & Kubernetes
    ➔ Images provided by Symfony Docker are compatible
    with Kubernetes
    ➔ Images provided by API Platform are compatible too
    ➔ API Platform provides a ready-made Helm chart that
    you can use with Symfony Docker too!
    ➔ Just copy it and run helm install
    @dunglas
    

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36. ➔ Any questions?
    Thank you!
    

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