Bazel

Bazel is a fast, scalable, multi-language, and extensible build system.

Skaffold can help build artifacts using Bazel locally; after Bazel finishes building container images, they will be loaded into the local Docker daemon.

Configuration

To use Bazel, bazel field to each artifact you specify in the artifacts part of the build section, and use the build type local. context should be a path containing the bazel files (WORKSPACE and BUILD). The following options can optionally be configured:

Example

The following build section instructs Skaffold to build a Docker image gcr.io/k8s-skaffold/example with Bazel:

build:
  artifacts:
  - image: gcr.io/k8s-skaffold/example
    bazel:
      target: //:example.tar

The following build section shows how to use Skaffold’s cross-platform support to pass --platforms to Bazel. In this example, the Bazel project defines the //platforms:linux-x86_64 //platforms:linux-arm64 targets. Skaffold will pass --platforms=//platforms:linux-x86_64 to bazel build if its target build platform matches linux/amd64, --platforms=//platforms:linux-arm64 if its target build platform matches linux/arm64, and will not pass --platforms otherwise.

build:
  artifacts:
    - image: gcr.io/k8s-skaffold/example
      bazel:
        target: //:example.tar
        platforms:
          - platform: linux/amd64
            target: //platforms:linux-x86_64
          - platform: linux/arm64
            target: //platforms:linux-arm64

Note that Skaffold does not support intelligently selecting the most specific variant for platforms with variants. For example, specifying linux/arm64 and linux/arm64/v8 will not work. In this example it would be better to specify linux/arm64/v7 and linux/arm64/v8 instead.