Question
Building an app with 2 buildpacks in a Dockerfille
- Posted on October 19, 2020
- DigitalOcean App Platform
Asked by arthuroliveira
Hello, I have an app with 2 buildpacks, one is the nodejs buildpack that compiles the frontend and the other is the ruby buildpack that builds the rails api. Using a droplet with dokku is easy to manage multiple builpdpacks and everything works, but here in the app platform I needed to create a custom Dockerfile do everything manually and I still cannot receive a live App URL and the build executor(kaniko) is very slow even increasing the machine size.
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With multi-stage builds, you can use multiple FROM statements in your Dockerfile. Each FROM instruction can use a different base, and each of them begins a new stage of the build. You can selectively copy artifacts from one stage to another, leaving behind everything you don’t want in the final image.
I managed to make it work and the app is live. But, the build is taking around 30 minutes which still is very slow compared with 5 minutes on heroku or dokku in a droplet.