v1.21.0 Release - 03/18/2021

Linux
curl -Lo skaffold https://storage.googleapis.com/skaffold/releases/v1.21.0/skaffold-linux-amd64 && chmod +x skaffold && sudo mv skaffold /usr/local/bin

macOS
curl -Lo skaffold https://storage.googleapis.com/skaffold/releases/v1.21.0/skaffold-darwin-amd64 && chmod +x skaffold && sudo mv skaffold /usr/local/bin

Windows
https://storage.googleapis.com/skaffold/releases/v1.21.0/skaffold-windows-amd64.exe

Docker image
gcr.io/k8s-skaffold/skaffold:v1.21.0

Note: This release comes with a new config version, v2beta13. To upgrade your skaffold.yaml, use skaffold fix. If you choose not to upgrade, skaffold will auto-upgrade as best as it can.

Highlights:

• Skaffold now supports running custom scripts in the skaffold test command or as part of the Test phase in skaffold dev. For more information and documentation, look here.
• New command skaffold apply for when you want Skaffold to simply deploy your pre-rendered Kubernetes manifests.
• Debugging Python application using skaffold debug now uses debugpy by default.
• New tutorials for artifact dependencies and configuration dependencies features.
• New example project examples/custom-buildx showing how to build multi-arch images using Skaffold.

New Features:

• Add 'skaffold apply' command #5543
• Implement custom tester functionality in Skaffold #5451
• Adding support for accessing built images in custom test #5535
• Adding support for re-triggering tests when test dependency changes #5533
• skaffold debug rewrites probe timeouts to avoid container restarts #5474
• Add digest source 'tag' to use tag without digest #5436
• Simpler host:port formatting for port-forwards #5488

Fixes:

• Fix issue where default-repo wasn't being added to artifact tags (#5341) #5397
• Fix setting of defaults for flags #5548
• fix: skaffold diagnose outputs incorrect yaml for multiconfig projects #5531
• fix logic that set absolute paths in the parsed configuration #5452
• decouple helm deployer chartPath into chartPath and remoteChart #5482
• Fixes #5404: Skaffold configs downloaded from a url can define remote config dependencies #5405
• Add golint support for M1 macs (darwin/arm64 arch) #5435
• Handle nil PortForward item on setting defaults #5416
• skip validating Dockerfile using explicit syntax directive #5441
• add explicit error codes for various config parsing errors #5483
• Adding distinct error codes for custom test failures #5501
• fix: Parsing fails for named multistage dockerfile using build artifact dependency #5507

Updates and Refactors:

• Update 2021 Roadmap #5514
• Give v2 proto different package name #5557
• update v2/ proto files #5512
• [refactor] Move tag package outside of build #5547
• add number of releases in helm config #5552
• Refactoring events to use Config interface for init #5532
• add debug/iterations metric #5359
• Update pack to 0.17.0 with Platform API 0.5 #5360
• Update gcr.io/k8s-skaffold/pack to 0.17.0 #5430
• Update Jib to 2.8.0 #5457
• Add support for no-option-value; surface per-option-defaults #5447
• Add metric for the count of skaffold configurations in current session; fix the build platform type metric to save list of all platforms #5437
• Add repo field to helm release #5410
• Update Paketo buildpack references #5446
• Allow Argo Rollout resource manifests to be transformed (#5523) #5524
• skaffold debug should use debugpy for Python #5576
• Add -o shorthand for --output flag to skaffold render #5526

Docs, Test, and Release Updates:

• Documentation for Custom Test in Skaffold #5521
• Fix custom build example #5495
• add tutorial for buildpacks run image override #5409
• Update DEVELOPMENT.md to include new information about changes to .proto files #5506
• Add example to use docker buildx via the custom builder #5426
• Link relevant Cloud Shell tutorials in doc site #5545

Huge thanks goes out to all of our contributors for this release:

• AB
• Bobby Richard
• Brian de Alwis
• Dan
• Felix Beuke
• Feng Ye
• Gaurav
• Gregory Moon
• Idan Bidani
• Isaac Duarte
• Marlon Gamez
• Matthieu Blottière
• Mridula
• Nick Kubala
• Piotr Szybicki
• Priya Modali
• Ricardo La Rosa
• Ryan Moran
• Shin Jinwoo
• Tejal Desai
• dhodun