feat: support react image in e2e matrix

e2e-version/action.yml

@@ -7,6 +7,10 @@ inputs:
     required: false
     description: 'Optionally, you can skip the Grafana dev image'
     type: boolean
+  skip-grafana-react-19-preview-image:
+    required: false
+    description: 'Skip the Grafana React 19 preview image (e.g., grafana/grafana:dev-preview-react19). Defaults to false (include) for Grafana org repositories, true (skip) for others. Can be explicitly overridden.'
+    type: boolean
   version-resolver-type:
     required: true 
     type: choice
@@ -32,5 +36,5 @@ output:
     description: 'Versions to test against'
 
 runs:
-  using: node20
+  using: node24
   main: ./dist/index.js

e2e-version/index.js

@@ -5,6 +5,7 @@ const fs = require('fs/promises');
 const path = require('path');
 
 const SkipGrafanaDevImageInput = 'skip-grafana-dev-image';
+const SkipGrafanaReact19PreviewImageInput = 'skip-grafana-react-19-preview-image';
 const VersionResolverTypeInput = 'version-resolver-type';
 const GrafanaDependencyInput = 'grafana-dependency';
 const LimitInput = 'limit';
@@ -18,6 +19,30 @@ const VersionResolverTypes = {
 async function run() {
   try {
     const skipGrafanaDevImage = core.getBooleanInput(SkipGrafanaDevImageInput);
+
+    // Determine default for React image based on repository owner
+    // Include by default for Grafana org repositories, skip for others
+    // GITHUB_REPOSITORY is in format "owner/repo", GITHUB_REPOSITORY_OWNER might not be available
+    const githubRepository = process.env.GITHUB_REPOSITORY || '';
+    const repositoryOwner = process.env.GITHUB_REPOSITORY_OWNER || githubRepository.split('/')[0] || '';
+    const isGrafanaOrg = repositoryOwner.toLowerCase() === 'grafana';
+
+    // Check if input was explicitly provided by checking if getInput returns non-empty string
+    // core.getInput() returns empty string when input is not provided
+    const reactImageInputValue = core.getInput(SkipGrafanaReact19PreviewImageInput);
+    const isExplicitlyProvided = reactImageInputValue !== '';
+
+    // If input is not explicitly provided, use org-based defaults
+    // If input is explicitly provided, always honor it using getBooleanInput
+    let skipGrafanaReact19PreviewImage;
+    if (!isExplicitlyProvided) {
+      // Input not provided: use defaults based on org
+      skipGrafanaReact19PreviewImage = !isGrafanaOrg; // false for Grafana org (include), true for external (skip)
+    } else {
+      // Input explicitly provided: always honor it
+      skipGrafanaReact19PreviewImage = core.getBooleanInput(SkipGrafanaReact19PreviewImageInput);
+    }
+
     const grafanaDependency = core.getInput(GrafanaDependencyInput);
     const versionResolverType = core.getInput(VersionResolverTypeInput) || VersionResolverTypes.PluginGrafanaDependency;
     const limit = parseInt(core.getInput(LimitInput));
@@ -75,6 +100,11 @@ async function run() {
       }
     }
 
+    if (!skipGrafanaReact19PreviewImage) {
+      // Add hardcoded Grafana React 19 preview image
+      images.push({ name: 'grafana', version: 'dev-preview-react19' });
+    }
+
     console.log('Resolved images: ', images);
     core.setOutput(MatrixOutput, JSON.stringify(images));
     return images;