diff --git a/action.yml b/action.yml
index 1ed61862..40ef41b7 100644
--- a/action.yml
+++ b/action.yml
@@ -65,6 +65,27 @@ inputs:
       If not set this option, the GITHUB_REF environment variable (automatically set by GitHub Actions) will be used.
     required: false
 
+# Note:
+# - inputs.* should be manually mapped to INPUT_* due to https://github.com/actions/runner/issues/665
+# - Use GITHUB_*/RUNNER_* instead of github.*/runner.* due to https://github.com/actions/runner/issues/2185
 runs:
-  using: node16
-  main: main.js
+  using: composite
+  steps:
+    - run: bash --noprofile --norc "${GITHUB_ACTION_PATH:?}/main.sh"
+      shell: bash
+      env:
+        INPUT_BIN: ${{ inputs.bin }}
+        INPUT_ARCHIVE: ${{ inputs.archive }}
+        INPUT_TARGET: ${{ inputs.target }}
+        INPUT_FEATURES: ${{ inputs.features }}
+        INPUT_NO_DEFAULT_FEATURES: ${{ inputs.no_default_features }}
+        INPUT_MANIFEST_PATH: ${{ inputs.manifest_path }}
+        INPUT_TAR: ${{ inputs.tar }}
+        INPUT_ZIP: ${{ inputs.zip }}
+        INPUT_INCLUDE: ${{ inputs.include }}
+        INPUT_ASSET: ${{ inputs.asset }}
+        INPUT_LEADING_DIR: ${{ inputs.leading_dir }}
+        INPUT_BUILD_TOOL: ${{ inputs.build_tool }}
+        INPUT_CHECKSUM: ${{ inputs.checksum }}
+        INPUT_TOKEN: ${{ inputs.token }}
+        INPUT_REF: ${{ inputs.ref }}
diff --git a/main.js b/main.js
deleted file mode 100644
index 804c20d2..00000000
--- a/main.js
+++ /dev/null
@@ -1,28 +0,0 @@
-// This is a script that just calls the bash script that does the main
-// processing of the action. It works like a composite action that calls
-// a single bash script.
-//
-// This was originally a trick adopted to make bash script-based actions work
-// without docker before composite actions were supported. However, due to
-// various problems with composite actions, this trick is still needed:
-// - https://github.com/actions/runner/issues/665
-// - https://github.com/actions/runner/issues/2185
-// Although there are ways to work around these like cache-cargo-install-action does:
-// https://github.com/taiki-e/cache-cargo-install-action/blob/v1.0.1/action.yml#L9-L11
-
-const { execFileSync } = require('child_process');
-
-function main() {
-    try {
-        execFileSync(
-            'bash',
-            ['--noprofile', '--norc', `${__dirname}/main.sh`],
-            { stdio: 'inherit' }
-        );
-    } catch (e) {
-        console.log(`::error::${e.message}`);
-        process.exit(1);
-    }
-}
-
-main();