diff --git a/puppet/Dockerfile b/puppet/Dockerfile
index 5c72ffc..23706b6 100644
--- a/puppet/Dockerfile
+++ b/puppet/Dockerfile
@@ -11,4 +11,4 @@ COPY package.json yarn.lock ./
 RUN yarn --production && rm -rf node_modules/puppeteer/.local-chromium
 
 COPY . /opt/mautrix-amp/puppet
-CMD ["yarn", "start", "/data/config.json"]
+CMD ["yarn", "start", "--config", "/data/config.json", "--browser", "/usr/lib/chromium/chrome"]
diff --git a/puppet/example-config.json b/puppet/example-config.json
index 8abb094..ffeef59 100644
--- a/puppet/example-config.json
+++ b/puppet/example-config.json
@@ -3,5 +3,7 @@
 		"type": "unix",
 		"path": "/var/run/mautrix-amp/puppet.sock"
 	},
-	"profile_dir": "./profiles"
+	"profile_dir": "./profiles",
+	"disable_debug": true,
+	"url": "https://messages.google.com/web/",
 }
diff --git a/puppet/package.json b/puppet/package.json
index 964c6c0..25fa99f 100644
--- a/puppet/package.json
+++ b/puppet/package.json
@@ -15,6 +15,7 @@
     "start": "node ./src/main.js"
   },
   "dependencies": {
+    "arg": "^4.1.3",
     "chrono-node": "^2.1.7",
     "puppeteer": "5.1.0"
   },
diff --git a/puppet/src/main.js b/puppet/src/main.js
index ac460a4..7f2783c 100644
--- a/puppet/src/main.js
+++ b/puppet/src/main.js
@@ -16,16 +16,26 @@
 import process from "process"
 import fs from "fs"
 
+import arg from "arg"
+
 import PuppetAPI from "./api.js"
 import MessagesPuppeteer from "./puppet.js"
 
-let path = process.argv[process.argv.length - 1]
-if (!path.endsWith(".json")) {
-	path = "config.json"
-}
-console.log("Reading config from", path)
-const config = JSON.parse(fs.readFileSync(path).toString())
-MessagesPuppeteer.profileDir = config.profile_dir
+const args = arg({
+	"--config": String,
+	"--browser": String,
+	"-c": "--config",
+	"-b": "--browser",
+})
+
+const configPath = args["--config"] || "config.json"
+MessagesPuppeteer.executablePath = args["--browser"] || MessagesPuppeteer.executablePath
+
+console.log("Reading config from", configPath)
+const config = JSON.parse(fs.readFileSync(configPath).toString())
+MessagesPuppeteer.profileDir = config.profile_dir || MessagesPuppeteer.profileDir
+MessagesPuppeteer.disableDebug = !!config.disable_debug
+MessagesPuppeteer.url = config.url || MessagesPuppeteer.url
 
 const api = new PuppetAPI(config.listen)
 
diff --git a/puppet/src/puppet.js b/puppet/src/puppet.js
index 9af773f..94a05a8 100644
--- a/puppet/src/puppet.js
+++ b/puppet/src/puppet.js
@@ -24,7 +24,10 @@ import { sleep } from "./util.js"
 
 export default class MessagesPuppeteer {
 	static profileDir = "./profiles"
-	url = "https://messages.google.com/web/"
+	static executablePath = undefined
+	static disableDebug = false
+	static viewport = { width: 1920, height: 1080 }
+	static url = "https://messages.google.com/web/"
 
 	/**
 	 *
@@ -59,9 +62,10 @@ export default class MessagesPuppeteer {
 	async start(debug = false) {
 		this.log("Launching browser")
 		this.browser = await puppeteer.launch({
+			executablePath: MessagesPuppeteer.executablePath,
 			userDataDir: this.profilePath,
-			headless: !debug,
-			defaultViewport: { width: 1920, height: 1080 },
+			headless: MessagesPuppeteer.disableDebug || !debug,
+			defaultViewport: MessagesPuppeteer.viewport,
 		})
 		this.log("Opening new tab")
 		const pages = await this.browser.pages()
@@ -70,8 +74,8 @@ export default class MessagesPuppeteer {
 		} else {
 			this.page = await this.browser.newPage()
 		}
-		this.log("Opening", this.url)
-		await this.page.goto(this.url)
+		this.log("Opening", MessagesPuppeteer.url)
+		await this.page.goto(MessagesPuppeteer.url)
 
 		this.log("Injecting content script")
 		await this.page.addScriptTag({ path: "./src/contentscript.js", type: "module" })
diff --git a/puppet/yarn.lock b/puppet/yarn.lock
index 1f94340..eeffcd0 100644
--- a/puppet/yarn.lock
+++ b/puppet/yarn.lock
@@ -170,6 +170,11 @@ ansi-styles@^4.1.0:
     "@types/color-name" "^1.1.1"
     color-convert "^2.0.1"
 
+arg@^4.1.3:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.3.tgz#269fc7ad5b8e42cb63c896d5666017261c144089"
+  integrity sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==
+
 argparse@^1.0.7:
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"