backstage/.changeset/dull-icons-share.md

@backstage/backend-common, @backstage/cli, @backstage/config-loader, example-backend, @backstage/create-app

@backstage/backend-common	@backstage/cli	@backstage/config-loader	example-backend	@backstage/create-app
minor	minor	minor	patch	patch

BREAKING CHANGE

The existing loading of additional config files like app-config.development.yaml using APP_ENV or NODE_ENV has been removed. Instead, the CLI and backend process now accept one or more --config flags to load config files.

Without passing any flags, app-config.yaml and, if it exists, app-config.local.yaml will be loaded. If passing any --config <path> flags, only those files will be loaded, NOT the default app-config.yaml one.

The old behaviour of for example APP_ENV=development can be replicated using the following flags:

--config ../../app-config.yaml --config ../../app-config.development.yaml