Improve README
Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
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@ -255,6 +255,29 @@ jobs:
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if: always()
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uses: crazy-max/ghaction-dump-context@v1
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export-docker:
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runs-on: ubuntu-latest
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steps:
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-
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name: Checkout
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uses: actions/checkout@v2.3.3
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-
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name: Build
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uses: ./
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with:
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context: ./test
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file: ./test/Dockerfile
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load: true
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tags: myimage:latest
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-
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name: Inspect
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run: |
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docker image inspect myimage:latest
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-
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name: Dump context
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if: always()
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uses: crazy-max/ghaction-dump-context@v1
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multi:
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runs-on: ubuntu-latest
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strategy:
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85
README.md
85
README.md
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@ -7,10 +7,10 @@
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## Upgrade from v1
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`v2` of this action includes significant updates and now uses Docker [Buildx](https://github.com/docker/buildx). It
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works with 3 new optional actions ([login](https://github.com/docker/login-action), [setup-buildx](https://github.com/docker/setup-buildx-action)
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works with 3 new actions ([login](https://github.com/docker/login-action), [setup-buildx](https://github.com/docker/setup-buildx-action)
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and [setup-qemu](https://github.com/docker/setup-qemu-action)) that we have created. It's also rewritten as a
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[typescript-action](https://github.com/actions/typescript-action/) to be as closed as possible of the
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[GitHub Runner](https://github.com/actions/virtual-environments) during its execution (#71 #92).
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[GitHub Runner](https://github.com/actions/virtual-environments) during its execution.
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[Upgrade notes](UPGRADE.md) and many [usage examples](#usage) have been added to handle most use cases but `v1` is
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still available through [`releases/v1` branch](https://github.com/docker/build-push-action/tree/releases/v1).
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@ -37,6 +37,7 @@ ___
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* [Push to multi-registries](#push-to-multi-registries)
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* [Cache to registry](#push-to-multi-registries)
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* [Local registry](#local-registry)
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* [Export image to Docker](#export-image-to-docker)
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* [Leverage GitHub cache](#leverage-github-cache)
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* [Complete workflow](#complete-workflow)
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* [Update DockerHub repo description](#update-dockerhub-repo-description)
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@ -56,7 +57,8 @@ build-secrets, remote cache, etc. and different builder deployment/namespacing o
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### Git context
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The default behavior of this action is to use the [Git context invoked by your workflow](https://github.com/docker/build-push-action/blob/master/src/context.ts#L31-L35).
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The default behavior of this action is to use the [Git context invoked](https://github.com/docker/build-push-action/blob/master/src/context.ts#L31-L35)
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by your workflow.
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```yaml
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name: ci
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@ -380,6 +382,46 @@ For testing purposes you may need to create a [local registry](https://hub.docke
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```
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</details>
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### Export image to Docker
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You may want your build result to be available in the Docker client through `docker images` to be able to use it
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in another step of your workflow:
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<details>
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<summary><b>Show workflow</b></summary>
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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export-docker:
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runs-on: ubuntu-latest
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steps:
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-
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name: Checkout
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uses: actions/checkout@v2
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Build
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uses: docker/build-push-action@v2
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with:
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context: .
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file: ./Dockerfile
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load: true
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tags: myimage:latest
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-
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name: Inspect
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run: |
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docker image inspect myimage:latest
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```
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</details>
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### Leverage GitHub cache
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You can leverage [GitHub cache](https://docs.github.com/en/actions/configuring-and-managing-workflows/caching-dependencies-to-speed-up-workflows)
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@ -427,15 +469,20 @@ using [actions/cache](https://github.com/actions/cache) with this action:
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```
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</details>
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> If you want to [export layers for all stages](https://github.com/docker/buildx#--cache-tonametypetypekeyvalue),
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> you have to specify `mode=max` attribute in `cache-to`.
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### Complete workflow
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If you come from [`v1`](https://github.com/docker/build-push-action/tree/releases/v1#readme) and you want an
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If you come from [`v1`](https://github.com/docker/build-push-action/tree/releases/v1#readme) and want an
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"automatic" tag management through Git reference and [OCI Image Format Specification](https://github.com/opencontainers/image-spec/blob/master/annotations.md)
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for labels, you will have to do it in a dedicated step [for now](https://github.com/docker/build-push-action/issues/116).
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for labels, you will have to do it in a dedicated step.
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The following workflow with the `Prepare` step will generate some [outputs](https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjobs_idoutputs)
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to handle tags and labels based on GitHub actions events. This is just an example to show many cases that you
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might want to use:
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to handle tags and labels based on GitHub actions events.
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This is just an example to show many cases that you might want to use and that you will have to adapt according
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to your needs:
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<details>
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<summary><b>Show workflow</b></summary>
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@ -595,6 +642,18 @@ with this action:
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Following inputs can be used as `step.with` keys
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> `List` type is a newline-delimited string
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> ```yaml
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> cache-from: |
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> user/app:cache
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> type=local,src=path/to/dir
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> ```
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> `CSV` type is a comma-delimited string
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> ```yaml
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> tags: name/app:latest,name/app:1.0.0
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> ```
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| Name | Type | Description |
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|---------------------|----------|------------------------------------|
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| `builder` | String | Builder instance (see [setup-buildx](https://github.com/docker/setup-buildx-action) action) |
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@ -615,18 +674,6 @@ Following inputs can be used as `step.with` keys
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| `cache-to` | List | List of [cache export destinations](https://github.com/docker/buildx#--cache-tonametypetypekeyvalue) (eg. `type=local,dest=path/to/dir`) |
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| `secrets` | List | List of secrets to expose to the build (eg. `key=value`, `GIT_AUTH_TOKEN=mytoken`) |
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> `List` type is a newline-delimited string
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> ```yaml
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> cache-from: |
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> user/app:cache
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> type=local,src=path/to/dir
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> ```
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> `CSV` type is a comma-delimited string
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> ```yaml
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> tags: name/app:latest,name/app:1.0.0
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> ```
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### outputs
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Following outputs are available
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