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GitHub Package RegistryにDocker Imageを公開する

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GitHub Package Registryに、Dockerイメージを作成する。
今回はJibでJavaアプリケーションのイメージを作成し、プッシュすることを目標にする。

公式
GitHub Package RegistryにGradleでJARを公開する

Gradleの設定

build.gradle
plugins {
    id 'com.google.cloud.tools.jib' version '1.5.1'
}

jib {
    to {
        image = "docker.pkg.github.com/minebreaker/abukuma/abukuma-example:0.0.0.2-EXPLORING_GITHUB_REGISTRY"
        auth {
            username = project.hasProperty("GITHUB_USER") ? GITHUB_USER : ''
            password = project.hasProperty("GITHUB_TOKEN") ? GITHUB_TOKEN : ''
        }
    }
}

注意すべきなのは、ユーザー名やリポジトリが大文字であっても、小文字に変換して記述しなければいけないこと。

早速jibタスクでビルド&公開。

* What went wrong:
Execution failed for task ':abukuma-example:jib'.
> com.google.cloud.tools.jib.plugins.common.BuildStepsExecutionException: Tried to check BLOB exists for docker.pkg.github.com/minebreaker/abukuma/abukuma-example with digest sha256:e8d8785a314f385d3675a017f4e2df1707c528c06e7a7989663fdab4900bd8ff but failed because: Did not receive Content-Length header | If this is a bug, please file an issue at https://github.com/GoogleContainerTools/jib/issues/new

これは怪しい。。。
Content-Lengthが見えないという事は大抵、リクエストに応答していない場合が多いように思う。

ビルド

仕方がないので、jibDockerBuildでイメージだけを作成。

Built image to Docker daemon as docker.pkg.github.com/minebreaker/abukuma/abukuma-example:0.0.0.2-EXPLORING_GITHUB_REGISTRY
Executing tasks:
[==============================] 100.0% complete

> Task :abukuma-example:jibDockerBuild

BUILD SUCCESSFUL in 10s

ドキュメントに従えば、問題なくプッシュできた。

docker login docker.pkg.github.com -u minebreaker -p [[TOKEN]]
docker push docker.pkg.github.com/minebreaker/abukuma/abukuma-example:0.0.0.2-EXPLORING_GITHUB_REGISTRY

プル。

docker pull docker.pkg.github.com/minebreaker/abukuma/abukuma-example:0.0.0.2-exploring_github_registry

まとめ

Jibで完結させたいが...。

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