image.bzl

load("@io_bazel_rules_docker//container:pull.bzl", "container_pull")
load("@io_bazel_rules_docker//container:image.bzl", "container_image")
load("@io_bazel_rules_docker//container:bundle.bzl", "container_bundle")
load("@io_bazel_rules_docker//contrib:push-all.bzl", "container_push")
load("@io_bazel_rules_docker//go:image.bzl", "go_image")

def operating_system():
    container_pull(
            name = "alpine_linux_amd64",
            registry = "index.docker.io",
            repository = "library/alpine",
            digest = "sha256:69704ef328d05a9f806b6b8502915e6a0a4faa4d72018dc42343f511490daf8a",
            tag = "3.14.2",
    )

def build_plugin_image(name, plugin, **kwargs):
    build_image(
        name = name,
        base = "@alpine_linux_amd64//image",
        repository = plugin,
    )

# build_image is a macro for creating :app and :image targets
def build_image(
        name,
        app_name = "app",
        base = None,
        goarch = "amd64",
        goos = "linux",
        stamp = True,
        component = [":go_default_library"],
        **kwargs):

    go_image(
        name = app_name,
        base = base,
        embed = component,
        goarch = goarch,
        goos = goos,
    )

    container_image(
        name = name,
        base = ":" + app_name,
        stamp = stamp,
        entrypoint = ["/app/app.binary"],
        **kwargs
    )


# push_image creates a bundle of container images and push them.
def push_image(
        name,
        bundle_name = "bundle",
        images = None):
    container_bundle(
        name = bundle_name,
        images = images,
    )
    container_push(
        name = name,
        bundle = ":" + bundle_name,
        format = "Docker",
    )

# image_tags returns a {image: target} map for each cmd or {name: target}
# Concretely,image_tags("//checkpr:image") will output the following:
# {
#   "swr.ap-southeast-1.myhuaweicloud.com/opensourceway/robot/checkpr:20210203-deadbeef": //checkpr:image
# }
def image_tags(target):
    return {"{IMAGE_REGISTRY}/{IMAGE_REPO}:{IMAGE_TAG}": target}