[](https://github.com/redhat-actions/buildah-build/actions?query=workflow%3A%22Build+from+dockerfile%22)
[Buildah](https://github.com/containers/buildah/tree/master/docs) only works on Linux. GitHub's [Ubuntu Environments](https://github.com/actions/virtual-environments#available-environments) (`ubuntu-18.04` and newer) come with buildah installed. If you are not using these environments, or if you want to use a different version, you must first [install buildah](https://github.com/containers/buildah/blob/master/install.md).
| 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
| 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**
| image | Name to give to the output image. | **Must be provided**
| oci | Build the image using the OCI format, instead of the Docker format. By default, this is `false`, because images built using the OCI format have issues when published to Dockerhub. | `false`
| tags | The tags of the image to build. For multiple tags, separate by a space. For example, `latest ${{ github.sha }}` | `latest`
| 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**
| 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
| entrypoint | The entry point to set for the container. This is a multiline input; split arguments across lines. | None
| envs | The environment variables to be set when running the container. This is a multiline input to add multiple environment variables. | None
| image | Name to give to the output image. | **Must be provided**
| oci | Build the image using the OCI format, instead of the Docker format. By default, this is `false`, because images built using the OCI format have issues when published to Dockerhub. | `false`
| port | The port to expose when running the container. | None
| tags | The tags of the image to build. For multiple tags, separate by a space. For example, `latest ${{ github.sha }}` | `latest`
| workdir | The working directory to use within the container. | None
In this case the inputs needed are `image` and `dockerfiles`. `tag` is also recommended. If your Dockerfile requires ARGs, these can be passed using `build-arg`.
If your build references a private image, run [**podman-login**](https://github.com/redhat-actions/podman-login) in a step before this action so you can pull the image.
