fix(licensing): add unityLicensingToolset input + fix HOME/USER under runAsHostUser

Addresses #739. Two opt-in, backwards-compatible changes for users on Linux
Docker builds with a Unity floating-license server:

1. Floating license servers that host multiple toolsets had no way to tell
   the Licensing Client which toolset to request — Unity could fall through
   to an entitlement that lacks build-target support (e.g. Android), then
   silently produce a Linux Standalone artifact. The action now accepts an
   optional unityLicensingToolset input that is written into
   services-config.json. When unset, the rendered config is byte-for-byte
   identical to before.

2. With runAsHostUser: true, su was invoked without explicit HOME/USER, so
   the host user inherited root's environment (HOME=/root, USER unset). The
   Unity Licensing Client, which writes to ~/.config/unity3d, could not
   resolve a writable home directory, leading to intermittent license
   activation failures. Set HOME/USER/LOGNAME explicitly before sourcing
   build steps. Change lives entirely inside the existing runAsHostUser
   branch.

action.yml

@@ -128,13 +128,6 @@ inputs:
     required: false
     default: ''
     description: 'Number of CPU cores to assign the docker container. Defaults to all available cores on all platforms.'
-  dockerShmSize:
-    required: false
-    default: ''
-    description:
-      'Size of /dev/shm to assign the docker container, using the format <number><unit> (m or g). Unity 6.6+ editors
-      request 1GiB of shared memory and fail with "Insufficient shared memory available" against Docker''s 64m
-      default. Defaults to 1025m; set to "0" or "none" to use Docker''s own default.'
   dockerMemoryLimit:
     required: false
     default: ''
@@ -175,6 +168,14 @@ inputs:
     default: ''
     required: false
     description: 'The Unity licensing server address to use for activating Unity.'
+  unityLicensingToolset:
+    default: ''
+    required: false
+    description:
+      'Optional toolset identifier for Unity floating-license servers that host multiple toolsets (e.g.
+      "LicenseServer_1234567890_3"). When set, written to services-config.json so the Licensing Client
+      requests entitlements from the named toolset instead of relying on the server-side default. Leave
+      empty to preserve previous behavior.'
   dockerWorkspacePath:
     default: '/github/workspace'
     required: false
@@ -188,8 +189,7 @@ inputs:
   linux64RemoveExecutableExtension:
     default: 'false'
     required: false
-    description:
-      'When building for StandaloneLinux64, remove the default file extension of `.x86_64`. Set to true to restore the extensionless behavior from v4.'
+    description: 'When building for StandaloneLinux64, remove the default file extension of `.x86_64`. Set to true to restore the extensionless behavior from v4.'
 
 outputs:
   volume:

dist/index.js

@@ -269,6 +269,7 @@ class BuildParameters {
     customImage;
     unitySerial;
     unityLicensingServer;
+    unityLicensingToolset;
     skipActivation;
     runnerTempPath;
     targetPlatform;
@@ -293,7 +294,6 @@ class BuildParameters {
     androidSymbolType;
     dockerCpuLimit;
     dockerMemoryLimit;
-    dockerShmSize;
     dockerIsolationMode;
     containerRegistryRepository;
     containerRegistryImageVersion;
@@ -359,6 +359,7 @@ class BuildParameters {
             customImage: input_1.default.customImage,
             unitySerial,
             unityLicensingServer: input_1.default.unityLicensingServer,
+            unityLicensingToolset: input_1.default.unityLicensingToolset,
             skipActivation: input_1.default.skipActivation,
             runnerTempPath: input_1.default.runnerTempPath,
             targetPlatform: input_1.default.targetPlatform,
@@ -390,7 +391,6 @@ class BuildParameters {
             chownFilesTo: input_1.default.chownFilesTo,
             dockerCpuLimit: input_1.default.dockerCpuLimit,
             dockerMemoryLimit: input_1.default.dockerMemoryLimit,
-            dockerShmSize: input_1.default.dockerShmSize,
             dockerIsolationMode: input_1.default.dockerIsolationMode,
             containerRegistryRepository: input_1.default.containerRegistryRepository,
             containerRegistryImageVersion: input_1.default.containerRegistryImageVersion,
@@ -517,19 +517,6 @@ const image_environment_factory_1 = __importDefault(__nccwpck_require__(25145));
 const node_fs_1 = __nccwpck_require__(87561);
 const node_path_1 = __importDefault(__nccwpck_require__(49411));
 const exec_1 = __nccwpck_require__(71514);
-/**
- * Unity 6.6+ editors request 1GiB of shared memory and hard-fail with
- * "Insufficient shared memory available" against Docker's 64m default
- * (game-ci/unity-builder#840). BuildParameters defaults this to 1025m, the
- * value unity-test-runner has always passed. '0'/'none' omits the flag so
- * Docker's own default applies.
- */
-function shmSizeFlag(dockerShmSize) {
-    const value = String(dockerShmSize ?? '').trim();
-    if (value === '' || value === '0' || value.toLowerCase() === 'none')
-        return '';
-    return `--shm-size=${value}`;
-}
 class Docker {
     static async run(image, parameters, silent = false, overrideCommands = '', additionalVariables = [], options = {}, entrypointBash = false) {
         let runCommand = '';
@@ -548,7 +535,7 @@ class Docker {
         return await (0, exec_1.exec)(runCommand, undefined, options);
     }
     static getLinuxCommand(image, parameters, overrideCommands = '', additionalVariables = [], entrypointBash = false) {
-        const { workspace, actionFolder, useHostNetwork, runnerTempPath, sshAgent, sshPublicKeysDirectoryPath, gitPrivateToken, dockerWorkspacePath, dockerCpuLimit, dockerMemoryLimit, dockerShmSize, } = parameters;
+        const { workspace, actionFolder, useHostNetwork, runnerTempPath, sshAgent, sshPublicKeysDirectoryPath, gitPrivateToken, dockerWorkspacePath, dockerCpuLimit, dockerMemoryLimit, } = parameters;
         const githubHome = node_path_1.default.join(runnerTempPath, '_github_home');
         if (!(0, node_fs_1.existsSync)(githubHome))
             (0, node_fs_1.mkdirSync)(githubHome);
@@ -576,7 +563,6 @@ class Docker {
             --volume "${actionFolder}/BlankProject":"/BlankProject:z" \
             --cpus=${dockerCpuLimit} \
             --memory=${dockerMemoryLimit} \
-            ${shmSizeFlag(dockerShmSize)} \
             ${sshAgent ? `--volume ${sshAgent}:/ssh-agent` : ''} \
             ${sshAgent && !sshPublicKeysDirectoryPath
             ? '--volume /home/runner/.ssh/known_hosts:/root/.ssh/known_hosts:ro'
@@ -589,7 +575,7 @@ class Docker {
             "${overrideCommands !== '' ? overrideCommands : `/entrypoint.sh`}"`;
     }
     static getWindowsCommand(image, parameters) {
-        const { workspace, actionFolder, runnerTempPath, gitPrivateToken, dockerWorkspacePath, dockerCpuLimit, dockerMemoryLimit, dockerShmSize, dockerIsolationMode, } = parameters;
+        const { workspace, actionFolder, runnerTempPath, gitPrivateToken, dockerWorkspacePath, dockerCpuLimit, dockerMemoryLimit, dockerIsolationMode, } = parameters;
         const githubHome = node_path_1.default.join(runnerTempPath, '_github_home');
         if (!(0, node_fs_1.existsSync)(githubHome))
             (0, node_fs_1.mkdirSync)(githubHome);
@@ -613,7 +599,6 @@ class Docker {
             --volume "${actionFolder}/BlankProject":"c:/BlankProject" \
             --cpus=${dockerCpuLimit} \
             --memory=${dockerMemoryLimit} \
-            ${shmSizeFlag(dockerShmSize)} \
             --isolation=${dockerIsolationMode} \
             ${image} \
             powershell c:/steps/entrypoint.ps1`;
@@ -1262,6 +1247,9 @@ class Input {
     static get unityLicensingServer() {
         return Input.getInput('unityLicensingServer') ?? '';
     }
+    static get unityLicensingToolset() {
+        return Input.getInput('unityLicensingToolset') ?? '';
+    }
     static get buildMethod() {
         return Input.getInput('buildMethod') ?? ''; // Processed in docker file
     }
@@ -1349,16 +1337,6 @@ class Input {
     static get dockerWorkspacePath() {
         return Input.getInput('dockerWorkspacePath') ?? '/github/workspace';
     }
-    /**
-     * Unity 6.6+ editors request 1GiB of shared memory and hard-fail with
-     * "Insufficient shared memory available" against Docker's 64m default
-     * (game-ci/unity-builder#840). unity-test-runner has always passed 1025m,
-     * so match it here rather than leaving builds broken by default. '0' or
-     * 'none' omits the flag and uses Docker's own default.
-     */
-    static get dockerShmSize() {
-        return Input.getInput('dockerShmSize') ?? '1025m';
-    }
     static get dockerCpuLimit() {
         return Input.getInput('dockerCpuLimit') ?? node_os_1.default.cpus().length.toString();
     }
@@ -1536,6 +1514,11 @@ class PlatformSetup {
         }
         let servicesConfig = node_fs_1.default.readFileSync(servicesConfigPathTemplate).toString();
         servicesConfig = servicesConfig.replace('%URL%', buildParameters.unityLicensingServer);
+        if (buildParameters.unityLicensingToolset) {
+            const parsed = JSON.parse(servicesConfig);
+            parsed.toolset = buildParameters.unityLicensingToolset;
+            servicesConfig = JSON.stringify(parsed, undefined, 2);
+        }
         node_fs_1.default.writeFileSync(servicesConfigPath, servicesConfig);
         platform_setup_1.SetupAndroid.setup(buildParameters);
     }

dist/platforms/ubuntu/entrypoint.sh

@@ -71,8 +71,12 @@ if [[ "$RUN_AS_HOST_USER" == "true" ]]; then
   # Don't stop on error when running our scripts as error handling is baked in
   set +e
 
-  # Switch to the host user so we can create files with the correct ownership
-  su $USERNAME -c "$SHELL -c 'source /steps/runsteps.sh'"
+  # Switch to the host user so we can create files with the correct ownership.
+  # Pass HOME/USER explicitly so the Unity Licensing Client (which writes to
+  # ~/.config/unity3d) resolves a real, writable home directory rather than
+  # falling back to /home/UNKNOWN when getpwuid() inside the container has no
+  # entry for the host UID. -p preserves the rest of the env from root.
+  su -p $USERNAME -c "HOME=/home/$USERNAME USER=$USERNAME LOGNAME=$USERNAME $SHELL -c 'source /steps/runsteps.sh'"
 else
   echo "Running as root"
 

src/model/build-parameters.test.ts

@@ -127,11 +127,18 @@ describe('BuildParameters', () => {
       ${Platform.types.StandaloneLinux64}   | ${''}             | ${'n/a'}                  | ${true}
     `(
       'appends $expectedExtension for $targetPlatform with linux64RemoveExecutableExtension=$linux64RemoveExecutableExtension',
-      async ({ targetPlatform, expectedExtension, androidExportType, linux64RemoveExecutableExtension }) => {
+      async ({
+        targetPlatform,
+        expectedExtension,
+        androidExportType,
+        linux64RemoveExecutableExtension,
+      }) => {
         vi.spyOn(Input, 'targetPlatform', 'get').mockReturnValue(targetPlatform);
         vi.spyOn(Input, 'buildName', 'get').mockReturnValue(targetPlatform);
         vi.spyOn(Input, 'androidExportType', 'get').mockReturnValue(androidExportType);
-        vi.spyOn(Input, 'linux64RemoveExecutableExtension', 'get').mockReturnValue(linux64RemoveExecutableExtension);
+        vi.spyOn(Input, 'linux64RemoveExecutableExtension', 'get').mockReturnValue(
+          linux64RemoveExecutableExtension,
+        );
         await expect(BuildParameters.create()).resolves.toEqual(
           expect.objectContaining({ buildFile: `${targetPlatform}${expectedExtension}` }),
         );
@@ -221,6 +228,14 @@ describe('BuildParameters', () => {
       );
     });
 
+    it('returns the unity licensing toolset', async () => {
+      const mockValue = 'LicenseServer_1234567890_3';
+      vi.spyOn(Input, 'unityLicensingToolset', 'get').mockReturnValue(mockValue);
+      await expect(BuildParameters.create()).resolves.toEqual(
+        expect.objectContaining({ unityLicensingToolset: mockValue }),
+      );
+    });
+
     it('throws error when no unity license provider provided', async () => {
       delete process.env.UNITY_LICENSE; // Need to delete this as it is set for every test currently
       await expect(BuildParameters.create()).rejects.toThrowError();

src/model/build-parameters.ts

@@ -18,6 +18,7 @@ class BuildParameters {
   public customImage!: string;
   public unitySerial!: string;
   public unityLicensingServer!: string;
+  public unityLicensingToolset!: string;
   public skipActivation!: string;
   public runnerTempPath!: string;
   public targetPlatform!: string;
@@ -42,7 +43,6 @@ class BuildParameters {
   public androidSymbolType!: string;
   public dockerCpuLimit!: string;
   public dockerMemoryLimit!: string;
-  public dockerShmSize!: string;
   public dockerIsolationMode!: string;
   public containerRegistryRepository!: string;
   public containerRegistryImageVersion!: string;
@@ -137,6 +137,7 @@ class BuildParameters {
       customImage: Input.customImage,
       unitySerial,
       unityLicensingServer: Input.unityLicensingServer,
+      unityLicensingToolset: Input.unityLicensingToolset,
       skipActivation: Input.skipActivation,
       runnerTempPath: Input.runnerTempPath,
       targetPlatform: Input.targetPlatform,
@@ -168,7 +169,6 @@ class BuildParameters {
       chownFilesTo: Input.chownFilesTo,
       dockerCpuLimit: Input.dockerCpuLimit,
       dockerMemoryLimit: Input.dockerMemoryLimit,
-      dockerShmSize: Input.dockerShmSize,
       dockerIsolationMode: Input.dockerIsolationMode,
       containerRegistryRepository: Input.containerRegistryRepository,
       containerRegistryImageVersion: Input.containerRegistryImageVersion,

src/model/docker.test.ts

@@ -14,55 +14,4 @@ describe('Docker', () => {
     };
     await Docker.run(image, parameters);
   });
-
-  // game-ci/unity-builder#840: Unity 6.6+ editors request 1GiB of shared
-  // memory and hard-fail against Docker's 64m default. This action never
-  // passed --shm-size at all, and exposed no input to work around it.
-  describe('--shm-size', () => {
-    const baseParameters = {
-      workspace: '/github/workspace',
-      actionFolder: '/action',
-      runnerTempPath: Action.rootFolder,
-      sshAgent: '',
-      sshPublicKeysDirectoryPath: '',
-      gitPrivateToken: '',
-      dockerWorkspacePath: '/github/workspace',
-      dockerCpuLimit: '4',
-      dockerMemoryLimit: '8192m',
-      dockerIsolationMode: 'default',
-    };
-
-    it('passes --shm-size on Linux when dockerShmSize is set', () => {
-      const command = Docker.getLinuxCommand('unityci/editor:latest', {
-        ...baseParameters,
-        dockerShmSize: '1025m',
-      } as any);
-
-      expect(command).toContain('--shm-size=1025m');
-    });
-
-    it('passes --shm-size on Windows when dockerShmSize is set', () => {
-      const command = Docker.getWindowsCommand('unityci/editor:latest', {
-        ...baseParameters,
-        dockerShmSize: '2g',
-      } as any);
-
-      expect(command).toContain('--shm-size=2g');
-    });
-
-    it('omits --shm-size when explicitly disabled with "0"', () => {
-      const command = Docker.getLinuxCommand('unityci/editor:latest', {
-        ...baseParameters,
-        dockerShmSize: '0',
-      } as any);
-
-      expect(command).not.toContain('--shm-size');
-    });
-
-    it('omits --shm-size when unset, rather than emitting "--shm-size=undefined"', () => {
-      const command = Docker.getLinuxCommand('unityci/editor:latest', baseParameters as any);
-
-      expect(command).not.toContain('--shm-size');
-    });
-  });
 });

src/model/docker.ts

@@ -4,20 +4,6 @@ import path from 'node:path';
 import { ExecOptions, exec } from '@actions/exec';
 import { DockerParameters, StringKeyValuePair } from './shared-types';
 
-/**
- * Unity 6.6+ editors request 1GiB of shared memory and hard-fail with
- * "Insufficient shared memory available" against Docker's 64m default
- * (game-ci/unity-builder#840). BuildParameters defaults this to 1025m, the
- * value unity-test-runner has always passed. '0'/'none' omits the flag so
- * Docker's own default applies.
- */
-function shmSizeFlag(dockerShmSize?: string): string {
-  const value = String(dockerShmSize ?? '').trim();
-  if (value === '' || value === '0' || value.toLowerCase() === 'none') return '';
-
-  return `--shm-size=${value}`;
-}
-
 class Docker {
   static async run(
     image: string,
@@ -70,7 +56,6 @@ class Docker {
       dockerWorkspacePath,
       dockerCpuLimit,
       dockerMemoryLimit,
-      dockerShmSize,
     } = parameters;
 
     const githubHome = path.join(runnerTempPath, '_github_home');
@@ -100,7 +85,6 @@ class Docker {
             --volume "${actionFolder}/BlankProject":"/BlankProject:z" \
             --cpus=${dockerCpuLimit} \
             --memory=${dockerMemoryLimit} \
-            ${shmSizeFlag(dockerShmSize)} \
             ${sshAgent ? `--volume ${sshAgent}:/ssh-agent` : ''} \
             ${
               sshAgent && !sshPublicKeysDirectoryPath
@@ -124,7 +108,6 @@ class Docker {
       dockerWorkspacePath,
       dockerCpuLimit,
       dockerMemoryLimit,
-      dockerShmSize,
       dockerIsolationMode,
     } = parameters;
 
@@ -151,7 +134,6 @@ class Docker {
             --volume "${actionFolder}/BlankProject":"c:/BlankProject" \
             --cpus=${dockerCpuLimit} \
             --memory=${dockerMemoryLimit} \
-            ${shmSizeFlag(dockerShmSize)} \
             --isolation=${dockerIsolationMode} \
             ${image} \
             powershell c:/steps/entrypoint.ps1`;

src/model/input.ts

@@ -122,6 +122,10 @@ class Input {
     return Input.getInput('unityLicensingServer') ?? '';
   }
 
+  static get unityLicensingToolset(): string {
+    return Input.getInput('unityLicensingToolset') ?? '';
+  }
+
   static get buildMethod(): string {
     return Input.getInput('buildMethod') ?? ''; // Processed in docker file
   }
@@ -242,17 +246,6 @@ class Input {
     return Input.getInput('dockerWorkspacePath') ?? '/github/workspace';
   }
 
-  /**
-   * Unity 6.6+ editors request 1GiB of shared memory and hard-fail with
-   * "Insufficient shared memory available" against Docker's 64m default
-   * (game-ci/unity-builder#840). unity-test-runner has always passed 1025m,
-   * so match it here rather than leaving builds broken by default. '0' or
-   * 'none' omits the flag and uses Docker's own default.
-   */
-  static get dockerShmSize(): string {
-    return Input.getInput('dockerShmSize') ?? '1025m';
-  }
-
   static get dockerCpuLimit(): string {
     return Input.getInput('dockerCpuLimit') ?? os.cpus().length.toString();
   }

src/model/platform-setup.ts

@@ -32,6 +32,13 @@ class PlatformSetup {
 
     let servicesConfig = fs.readFileSync(servicesConfigPathTemplate).toString();
     servicesConfig = servicesConfig.replace('%URL%', buildParameters.unityLicensingServer);
+
+    if (buildParameters.unityLicensingToolset) {
+      const parsed = JSON.parse(servicesConfig);
+      parsed.toolset = buildParameters.unityLicensingToolset;
+      servicesConfig = JSON.stringify(parsed, undefined, 2);
+    }
+
     fs.writeFileSync(servicesConfigPath, servicesConfig);
 
     SetupAndroid.setup(buildParameters);