diff --git a/config.js b/config.js
new file mode 100644
index 0000000..d7be3ea
--- /dev/null
+++ b/config.js
@@ -0,0 +1,6 @@
+const env = process.env
+module.exports = {
+  browser: env.BROWSER || '',
+  firefox_path: env.FIREFOX_PATH || '',
+  chrome_path: env.CHROME_PATH || ''
+}
diff --git a/index.js b/index.js
index fd1b2b7..0b74928 100644
--- a/index.js
+++ b/index.js
@@ -1,16 +1,38 @@
 const { Builder, By, Key, until } = require('selenium-webdriver')
 const chrome = require('selenium-webdriver/chrome')
 const firefox = require('selenium-webdriver/firefox')
+const config = require('./config')
 
 const setsUrl = 'https://www.echomtg.com/sets/'
 
 const setsClass = '.main.marketAnalysis.sets'
 
+if (!/^(firefox|chrome)$/i.test(config.browser)) {
+  console.log('browser type not support')
+  process.exit(1)
+}
+
 ;(async () => {
-  let ffOpts = new firefox.Options()
-  ffOpts.headless()
-  ffOpts.setBinary('/root/apps/firefox/firefox')
-  let driver = await new Builder().forBrowser('firefox').setFirefoxOptions(ffOpts).build()
+  let opts = null
+  let driver = null
+  if (/firefox/i.test(config.browser)) {
+    opts = new firefox.Options()
+    opts.headless()
+    if (config.firefox_path.length > 0) {
+      opts.setBinary(config.firefox_path)
+    }
+    driver = await new Builder().forBrowser('firefox').setFirefoxOptions(opts).build()
+  } else if (/chrome/i.test(config.browser)) {
+    opts = new chrome.Options()
+    opts.headless()
+    if (config.chrome_path.length > 0) {
+      opts.setChromeBinaryPath(config.chrome_path)
+    }
+    driver = await new Builder().forBrowser('chrome').setChromeOptions(opts).build()
+  } else {
+    console.log('browser type not support')
+  }
+  // driver = await new Builder().forBrowser('firefox').setFirefoxOptions(ffOpts).build()
   await driver.get(setsUrl)
   let el = await driver.findElement(By.css(setsClass))
   let sets = await el.findElements(By.css('h4>a'))
diff --git a/libs/driver.js b/libs/driver.js
new file mode 100644
index 0000000..82f13db
--- /dev/null
+++ b/libs/driver.js
@@ -0,0 +1,35 @@
+const { Builder, By, Key, until } = require('selenium-webdriver')
+const chrome = require('selenium-webdriver/chrome')
+const firefox = require('selenium-webdriver/firefox')
+const config = require('../config')
+
+const setsUrl = 'https://www.echomtg.com/sets/'
+
+const setsClass = '.main.marketAnalysis.sets'
+
+
+module.exports.getDriver = async () => {
+  if (!/^(firefox|chrome)$/i.test(config.browser)) {
+    throw new Error('browser type not support')
+  }
+  let opts = null
+  let driver = null
+  if (/firefox/i.test(config.browser)) {
+    opts = new firefox.Options()
+    opts.headless()
+    if (config.firefox_path.length > 0) {
+      opts.setBinary(config.firefox_path)
+    }
+    driver = await new Builder().forBrowser('firefox').setFirefoxOptions(opts).build()
+  } else if (/chrome/i.test(config.browser)) {
+    opts = new chrome.Options()
+    opts.headless()
+    if (config.chrome_path.length > 0) {
+      opts.setChromeBinaryPath(config.chrome_path)
+    }
+    driver = await new Builder().forBrowser('chrome').setChromeOptions(opts).build()
+  } else {
+    throw new Error('browser type not support')
+  }
+  return driver
+}