# 0.37.0 Migration Guide

## Changes

- The `app.json` file format is now parsed as JSONC and supports inline comments.
- The `scheduler-k3s:cluster-add` command is now `scheduler-k3s:cluster:add`.
- The `scheduler-k3s:cluster-list` command is now `scheduler-k3s:cluster:list`.
- The `scheduler-k3s:cluster-remove` command is now `scheduler-k3s:cluster:remove`.

## Removals

- Support for the `DOKKU_DOCKERFILE_CACHE_BUILD` environment variable has been removed. Use the `docker-options` plugin to set build arguments for your app instead.
- Support for the `DOKKU_DOCKER_BUILD_OPTS` environment variable has been removed. Use the `docker-options` plugin to set build arguments for your app instead.
- Support for the `no-cache` nixpacks property has been removed. Use the `docker-options` plugin to set build arguments for your app instead.
- Support for customizing the label-key for the caddy proxy has been removed. Always use `caddy.` as a prefix for your caddy directives.