diff --git a/src/extract.js b/src/extract.js
index 9c0e32d..aa9e6c8 100644
--- a/src/extract.js
+++ b/src/extract.js
@@ -3,6 +3,7 @@ const exec = require('@actions/exec');
 
 async function run() {
   try {
+    const shell = core.getInput('shell_command') || "/bin/bash -c";
     const image = core.getInput('image');
     const path = core.getInput('path');
     const destination = core.getInput('destination') || `.extracted-${Date.now()}`;
@@ -10,7 +11,7 @@ async function run() {
     const create = `docker cp $(docker create ${image}):/${path} ${destination}`;
 
     await exec.exec(`mkdir -p ${destination}`);
-    await exec.exec(`/bin/bash -c "${create}"`, []);
+    await exec.exec(`${shell} "${create}"`, []);
 
     core.setOutput('destination', destination);
   } catch (error) {