diff --git a/docs/appendices/0.25.0-migration-guide.md b/docs/appendices/0.25.0-migration-guide.md index 19afe7fa4af..99ea18f5cfa 100644 --- a/docs/appendices/0.25.0-migration-guide.md +++ b/docs/appendices/0.25.0-migration-guide.md @@ -18,6 +18,7 @@ The [dokku-registry](https://github.com/dokku/dokku-registry) plugin is now buil - The `pre-deploy` plugin trigger is now called internally by Dokku. Scheduler plugins should avoid calling this trigger, as any image changes introduced by subsequent trigger calls will be ignored. - The default image used for Herokuish Buildpack builds is now `gliderlabs/herokuish:latest-20`, and is based on both the `heroku-20` stack as well as Ubuntu 20.04. Users that wish to stick with the old, `heroku-18`/Ubuntu 18.04 builder may specify `gliderlabs/herokuish:latest-18` as their builder image. Please see the [herokuish buildpack deployment documentation](/docs/deployment/builders/herokuish-buildpacks.md#customizing-the-buildpack-stack-builder) for more information on how to specify a custom buildpack stack builder. - This change does not impact any users of Cloud Native Buildpacks. +- We fixed an issue that required extracting Procfiles at the beginning of a deploy. Due to this change, a `Dockerfile` app contains a `Procfile` that does not specify a `web` process will fail to start. Usage of a `Procfile` with _only_ a `release` command should be replaced with a `scripts.dokku.postdeploy` deployment task in the `app.json` file. The alternative is to define the `web` process in the `Procfile`. See the [deployment task documentation](/docs/advanced-usage/deployment-tasks.md) for more information. ### Deprecations