Do not retag images unnecessarily #4356
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This change minimizes the work needed to be done when tagging images. It edits the image manifest directly only when necessary, allowing restarts of an app to avoid having an extra layer. This also additionally allows to deploy images with ONBUILD directives without running the ONBUILD directives. Lastly, users building docker images that run Dokku will need to use a new sudoer wrapper for the `docker-image-labeler` binary to work correctly. A reference version has been placed in the `docker` skeleton directory. Closes #3931 Refs #4226
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# History ## 0.23.0 Install/update via the bootstrap script: ```shell wget https://raw.githubusercontent.com/dokku/dokku/v0.23.0/bootstrap.sh sudo DOKKU_TAG=v0.23.0 bash bootstrap.sh ``` See the [0.23.0 migration guide](/docs/appendices/0.23.0-migration-guide.md) for more information on migrating to 0.23.0. ### Bug Fixes - #4356: @josegonzalez Do not retag images unnecessarily - #4355: @josegonzalez Allow underscores in vector schemes - #4350: @josegonzalez Add missing trigger to events plugin - #4348: @josegonzalez Correct app-specific shell handling - #4333: @josegonzalez Drop tmpdir environment variables when not running as dokku user ### New Features - #4336: @josegonzalez Add ability to manage stacks on an app or global level … - #4354: @josegonzalez Log all triggers called by golang in trace output - #4300: @AubreyHewes allow disabling hsts globally and explicitly enable per app - #4337: @josegonzalez Add logrotation to container log files - #4318: @josegonzalez Add ability to set client max body size via nginx:set - #4343: @josegonzalez feat: add initial scheduled task implementation - #4297: @josegonzalez Add support for cloning/syncing from a remote repository - #4340: @bjornpost Allow configuring x-forwarded-* proxy headers via nginx:set ### Refactors - #4349: @josegonzalez Remove need for internal dokku calls ### Documentation - #4347: @fomojola Add post-deploy webhook to list of community plugins - #4342: @AubreyHewes Point to current testing docs - #4341: @josegonzalez Add testing link to contributing.md ### Tests - #4352: @josegonzalez Add a test for application renames - #4351: @josegonzalez Set hostname for CI runs - #4322: @josegonzalez Switch to Github Actions for CI ### Other - #4353: @josegonzalez Drop unused flag introduced by logs max-size feature
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This change minimizes the work needed to be done when tagging images. It edits the image manifest directly only when necessary, allowing restarts of an app to avoid having an extra layer.
This also additionally allows to deploy images with ONBUILD directives without running the ONBUILD directives.
Closes #3931
Refs #4226