Add il2cpp support for linux from 2019.3

src/model/image-tag.js

@@ -1,4 +1,4 @@
-import { has, get, trimEnd, trimStart } from 'lodash-es';
+import { trimEnd, trimStart } from 'lodash-es';
 import Platform from './platform';
 
 class ImageTag {
@@ -15,15 +15,7 @@ class ImageTag {
       throw new Error(`Invalid version "${version}".`);
     }
 
-    if (!has(ImageTag.targetPlatformToImageSuffixMap, platform)) {
-      throw new Error(`Platform "${platform}" is currently not supported.`);
-    }
-
-    const builderPlatform = get(
-      ImageTag.targetPlatformToImageSuffixMap,
-      platform,
-      ImageTag.imageSuffixes.generic,
-    );
+    const builderPlatform = ImageTag.getTargetPlatformToImageSuffixMap(platform, version);
 
     Object.assign(this, { repository, name, version, platform, builderPlatform, customImage });
   }
@@ -39,38 +31,78 @@ class ImageTag {
       mac: 'mac-mono',
       windows: 'windows-mono',
       linux: 'base',
+      linuxIl2cpp: 'linux-il2cpp',
       android: 'android',
       ios: 'ios',
       facebook: 'facebook',
     };
   }
 
-  static get targetPlatformToImageSuffixMap() {
-    const { generic, webgl, mac, windows, linux, android, ios, facebook } = ImageTag.imageSuffixes;
+  static getTargetPlatformToImageSuffixMap(platform, version) {
+    const {
+      generic,
+      webgl,
+      mac,
+      windows,
+      linux,
+      linuxIl2cpp,
+      android,
+      ios,
+      facebook,
+    } = ImageTag.imageSuffixes;
 
+    const [major, minor] = version.split('.');
     // @see: https://docs.unity3d.com/ScriptReference/BuildTarget.html
-    return {
-      [Platform.types.StandaloneOSX]: mac,
-      [Platform.types.StandaloneWindows]: windows,
-      [Platform.types.StandaloneWindows64]: windows,
-      [Platform.types.StandaloneLinux64]: linux,
-      [Platform.types.iOS]: ios,
-      [Platform.types.Android]: android,
-      [Platform.types.WebGL]: webgl,
-      [Platform.types.WSAPlayer]: windows,
-      [Platform.types.PS4]: windows,
-      [Platform.types.XboxOne]: windows,
-      [Platform.types.tvOS]: windows,
-      [Platform.types.Switch]: windows,
+    switch (platform) {
+      case Platform.types.StandaloneOSX:
+        return mac;
+      case Platform.types.StandaloneWindows:
+        return windows;
+      case Platform.types.StandaloneWindows64:
+        return windows;
+      case Platform.types.StandaloneLinux64: {
+        // Unity versions before 2019.3 do not support il2cpp
+        if (major >= 2020 || (major === 2019 && minor >= 3)) {
+          return linuxIl2cpp;
+        }
+        return linux;
+      }
+      case Platform.types.iOS:
+        return ios;
+      case Platform.types.Android:
+        return android;
+      case Platform.types.WebGL:
+        return webgl;
+      case Platform.types.WSAPlayer:
+        return windows;
+      case Platform.types.PS4:
+        return windows;
+      case Platform.types.XboxOne:
+        return windows;
+      case Platform.types.tvOS:
+        return windows;
+      case Platform.types.Switch:
+        return windows;
       // Unsupported
-      [Platform.types.Lumin]: windows,
-      [Platform.types.BJM]: windows,
-      [Platform.types.Stadia]: windows,
-      [Platform.types.Facebook]: facebook,
-      [Platform.types.NoTarget]: generic,
+      case Platform.types.Lumin:
+        return windows;
+      case Platform.types.BJM:
+        return windows;
+      case Platform.types.Stadia:
+        return windows;
+      case Platform.types.Facebook:
+        return facebook;
+      case Platform.types.NoTarget:
+        return generic;
+
       // Test specific
-      [Platform.types.Test]: generic,
-    };
+      case Platform.types.Test:
+        return generic;
+      default:
+        throw new Error(`
+          Platform must be one of the ones described in the documentation.
+          "${platform}" is currently not supported.`);
+    }
   }
 
   get tag() {