feature: Add multi architecture support

README.md

@@ -2,7 +2,7 @@
 
 Selfhosted runners do not come with the GH CLI out of the box. This action is an easy-to-use way to install it.
 
-As of now, only linux amd64 is supported.
+Supports linux on amd64 and arm64 architectures.
 
 ## Usage
 

src/run.js

@@ -25,10 +25,14 @@ async function getGhCli(version) {
 }
 
 async function downloadGhCli(version) {
-  const toolDirectoryName = `gh_${version}_linux_amd64`;
-  const downloadUrl = `https://github.com/cli/cli/releases/download/v${version}/gh_${version}_linux_amd64.tar.gz`;
-  console.log(`downloading ${downloadUrl}`);
 
+  let architecture = 'amd64';
+  if (process.arch == 'arm64') {
+    architecture = 'arm64';
+  }
+  const toolDirectoryName = `gh_${version}_linux_${architecture}`;
+  const downloadUrl = `https://github.com/cli/cli/releases/download/v${version}/gh_${version}_linux_${architecture}.tar.gz`;
+  console.log(`downloading ${downloadUrl}`);
   try {
     const downloadPath = await tc.downloadTool(downloadUrl);
     const extractedPath = await tc.extractTar(downloadPath);
@@ -38,5 +42,4 @@ async function downloadGhCli(version) {
     throw err;
   }
 }
-
 run();