Default to root user with option to use host user

action.yml

@@ -101,6 +101,12 @@ inputs:
     required: false
     default: ''
     description: '[CloudRunner] GitHub owner name or organization/team name'
+  runAsHostUser:
+    required: false
+    default: 'false'
+    description:
+      'Whether to run as a user that matches the host system or the default root container user. Only applicable to
+      Linux hosts and containers. This is useful for fixing permission errors on Self-Hosted runners.'
   chownFilesTo:
     required: false
     default: ''

dist/platforms/ubuntu/entrypoint.sh

@@ -52,7 +52,12 @@ else
   echo "Not updating Android SDK."
 fi
 
+if [[ "RUN_AS_HOST_USER" == "true" ]]; then
   # Switch to the host user so we can create files with the correct ownership
   su $USERNAME -c "$SHELL -c 'source /steps/runsteps.sh'"
+else
+  # Run as root
+  source /steps/runsteps.sh
+fi
 
 exit $?

src/model/build-parameters.ts

@@ -59,6 +59,7 @@ class BuildParameters {
   public kubeVolumeSize!: string;
   public kubeVolume!: string;
   public kubeStorageClass!: string;
+  public runAsHostUser!: String;
   public chownFilesTo!: string;
   public commandHooks!: string;
   public pullInputList!: string[];
@@ -168,6 +169,7 @@ class BuildParameters {
       sshAgent: Input.sshAgent,
       sshPublicKeysDirectoryPath: Input.sshPublicKeysDirectoryPath,
       gitPrivateToken: Input.gitPrivateToken || (await GithubCliReader.GetGitHubAuthToken()),
+      runAsHostUser: Input.runAsHostUser,
       chownFilesTo: Input.chownFilesTo,
       dockerCpuLimit: Input.dockerCpuLimit,
       dockerMemoryLimit: Input.dockerMemoryLimit,

src/model/image-environment-factory.ts

@@ -62,6 +62,7 @@ class ImageEnvironmentFactory {
       { name: 'ANDROID_EXPORT_TYPE', value: parameters.androidExportType },
       { name: 'ANDROID_SYMBOL_TYPE', value: parameters.androidSymbolType },
       { name: 'CUSTOM_PARAMETERS', value: parameters.customParameters },
+      { name: 'RUN_AS_HOST_USER', value: parameters.runAsHostUser },
       { name: 'CHOWN_FILES_TO', value: parameters.chownFilesTo },
       { name: 'GITHUB_REF', value: process.env.GITHUB_REF },
       { name: 'GITHUB_SHA', value: process.env.GITHUB_SHA },

src/model/input.ts

@@ -193,6 +193,10 @@ class Input {
     return Input.getInput('gitPrivateToken');
   }
 
+  static get runAsHostUser(): string {
+    return Input.getInput('runAsHostUser') || 'false';
+  }
+
   static get chownFilesTo() {
     return Input.getInput('chownFilesTo') || '';
   }