Fix: platform parameter is not supported by buildah config (build-without-containerfile)

Signed-off-by: James Addison <jay@jp-hosting.net>

README.md

@@ -45,7 +45,6 @@ After building your image, use [push-to-registry](https://github.com/redhat-acti
 | Input Name | Description | Default |
 | ---------- | ----------- | ------- |
 | arch | Label the image with this architecture, instead of defaulting to the host architecture. Refer to [Multi arch builds](#multi-arch-builds) for more information. | None (host architecture)
-| platform | Label the image with this platform, instead of defaulting to the host platform. Refer to [Multi arch builds](#multi-arch-builds) for more information. | None (host platform)
 | base-image | The base image to use for the container. | **Required**
 | 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. Separate arguments by newline. | None

action.yml

@@ -57,7 +57,9 @@ inputs:
     description: 'Alias for "arch". "arch" takes precedence if both are set.'
     required: false
   platform:
-    description: 'Label the image with this PLATFORM, instead of defaulting to the host platform.'
+    description: |
+      Label the image with this PLATFORM, instead of defaulting to the host platform.
+      Only supported for containerfile builds.
     required: false
   extra-args:
     description: |

src/buildah.ts

@@ -15,7 +15,6 @@ export interface BuildahConfigSettings {
     port?: string;
     workingdir?: string;
     arch?: string;
-    platform?: string;
 }
 
 interface Buildah {
@@ -140,10 +139,6 @@ export class BuildahCli implements Buildah {
             args.push("--arch");
             args.push(settings.arch);
         }
-        if (settings.platform) {
-            args.push("--platform");
-            args.push(settings.platform);
-        }
         if (settings.workingdir) {
             args.push("--workingdir");
             args.push(settings.workingdir);

src/generated/inputs-outputs.ts

@@ -87,6 +87,7 @@ export enum Inputs {
     OCI = "oci",
     /**
      * Label the image with this PLATFORM, instead of defaulting to the host platform.
+     * Only supported for containerfile builds.
      * Required: false
      * Default: None.
      */

src/index.ts

@@ -64,7 +64,10 @@ export async function run(): Promise<void> {
         await doBuildUsingContainerFiles(cli, newImage, workspace, containerFiles, useOCI, arch, platform);
     }
     else {
-        await doBuildFromScratch(cli, newImage, useOCI, arch, platform);
+        if (platform) {
+            throw new Error("The --platform option is not supported for builds without containerfiles.");
+        }
+        await doBuildFromScratch(cli, newImage, useOCI, arch);
     }
 
     if (tagsList.length > 1) {
@@ -105,7 +108,7 @@ async function doBuildUsingContainerFiles(
 }
 
 async function doBuildFromScratch(
-    cli: BuildahCli, newImage: string, useOCI: boolean, arch: string, platform: string
+    cli: BuildahCli, newImage: string, useOCI: boolean, arch: string
 ): Promise<void> {
     core.info(`Performing build from scratch`);
 
@@ -125,7 +128,6 @@ async function doBuildFromScratch(
         workingdir: workingDir,
         envs,
         arch,
-        platform,
     };
     await cli.config(containerId, newImageConfig);
     await cli.copy(containerId, content);