✨ Extract path from Docker Image (#1)

src/extract.js

@@ -0,0 +1,20 @@
+const core = require('@actions/core');
+const exec = require('@actions/exec');
+
+async function run() {
+  try {
+    const image = core.getInput('image');
+    const path = core.getInput('path');
+    const destination = `.extracted-${Date.now()}`;
+    const create = `docker cp $(docker create ${image}):/${path} ${destination}`;
+
+    await exec.exec(`mkdir -p ${destination}`);
+    await exec.exec(`/bin/bash -c "${create}"`, []);
+
+    core.setOutput('destination', destination);
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+run();