Improving Docker Builds for Symfony and API Platform Projects

2023/08/03

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The article discusses the optimization of Docker builds for Symfony and API Platform projects, resulting in 6x faster builds. The author, Kévin Dunglas, highlights the importance of reducing the environmental footprint and hosting costs of projects. While focusing on production code and infrastructure optimization, the author also emphasizes the significance of fast DevOps feedback loops for developers' efficiency. The Symfony Docker, a popular installer and runtime for the Symfony web framework, is used as an example. It provides an optimized setup for creating and running Symfony projects using Docker. The article also mentions the API Platform, which uses a Symfony Docker derivative and provides GitHub support. The author addresses the performance issue of Docker Compose in GitHub Actions workflows, where the build cache isn't kept between runs. However, Docker's experimental tool called Bake, which leverages BuildKit and Buildx, offers a solution by allowing the export of cached build layers to the GitHub Actions cache. This improvement significantly speeds up Docker builds. Overall, the article provides valuable insights for developers working with Symfony and API Platform projects.