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Add note to setup 'qemu-user-static' to build multi-arch image (#35)

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* Add note to setup 'qemu-user-static' to build multi-arch image

Signed-off-by: divyansh42 <diagrawa@redhat.com>

* Resolve reviews

Signed-off-by: divyansh42 <diagrawa@redhat.com>
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Divyanshu Agrawal 2021-03-04 02:10:40 +05:30 committed by GitHub
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@ -21,7 +21,7 @@ After building your image, use [push-to-registry](https://github.com/redhat-acti
| Input Name | Description | Default | | Input Name | Description | Default |
| ---------- | ----------- | ------- | | ---------- | ----------- | ------- |
| archs | Architecture(s) to build the image(s) for. For multiple architectures, separate by a comma. If the workflow is running on a self-hosted runner, [qemu-user-static](https://github.com/marketplace/actions/docker-setup-qemu) can be used to install the `qemu-user-static` dependency. | `amd64` | archs | Architecture(s) to build the image(s) for. For multiple architectures, separate by a comma. Refer to [Multi arch builds](#multi-arch-builds) to setup the `qemu-user-static` dependency. | `amd64`
| build-args | Build arguments to pass to the Docker build using `--build-arg`, if using a Dockerfile that requires ARGs. Use the form `arg_name=arg_value`, and separate arguments with newlines. | None | build-args | Build arguments to pass to the Docker build using `--build-arg`, if using a Dockerfile that requires ARGs. Use the form `arg_name=arg_value`, and separate arguments with newlines. | None
| context | Path to directory to use as the build context. | `.` | context | Path to directory to use as the build context. | `.`
| dockerfiles | The list of Dockerfile paths to perform a build using docker instructions. This is a multiline input to allow multiple Dockerfiles. | **Must be provided** | dockerfiles | The list of Dockerfile paths to perform a build using docker instructions. This is a multiline input to allow multiple Dockerfiles. | **Must be provided**
@ -33,7 +33,7 @@ After building your image, use [push-to-registry](https://github.com/redhat-acti
| Input Name | Description | Default | | Input Name | Description | Default |
| ---------- | ----------- | ------- | | ---------- | ----------- | ------- |
| archs | Architecture(s) to build the image(s) for. For multiple architectures, separate by a comma. If the workflow is running on a self-hosted runner, [qemu-user-static](https://github.com/marketplace/actions/docker-setup-qemu) can be used to install the `qemu-user-static` dependency. | `amd64` | archs | Architecture(s) to build the image(s) for. For multiple architectures, separate by a comma. Refer to [Multi arch builds](#multi-arch-builds) to setup the `qemu-user-static` dependency. | `amd64`
| base-image | The base image to use for the container. | **Must be provided** | base-image | The base image to use for the container. | **Must be provided**
| content | Paths to files or directories to copy inside the container to create the file image. This is a multiline input to allow you to copy multiple files/directories.| None | content | Paths to files or directories to copy inside the container to create the file image. This is a multiline input to allow you to copy multiple files/directories.| None
| context | Path to directory to use as the build context. | `.` | context | Path to directory to use as the build context. | `.`
@ -128,6 +128,14 @@ jobs:
port: 8080 port: 8080
``` ```
<a id="multi-arch-builds"></a>
## Multi arch builds
If building for an architecture other than `amd64`, install `qemu-user-static` using the following command.
```
sudo podman run --rm --privileged multiarch/qemu-user-static --reset -p yes
```
## Using private images ## Using private images
If your build requires a private image, you have to `docker login` in a step before running this action. If your build requires a private image, you have to `docker login` in a step before running this action.