diff --git a/jest.config.js b/jest.config.js
new file mode 100644
index 00000000..73aa3eae
--- /dev/null
+++ b/jest.config.js
@@ -0,0 +1,15 @@
+module.exports = {
+    "verbose": true,
+    "preset": "jest-puppeteer",
+    "globals": {
+        "__DEV__": true
+    },
+    "testRegex": "./test/*.spec.js",
+    "rootDir": ".",
+    "testTimeout": 30000,
+    "transform": {
+        "^.+\\.js$": "babel-jest",
+        ".+\\.(css|styl|less|sass|scss|png|jpg|ttf|woff|woff2)$": "jest-transform-stub"
+    }
+};
+
diff --git a/package.json b/package.json
index 7511e93d..c838efee 100644
--- a/package.json
+++ b/package.json
@@ -115,15 +115,5 @@
         "stylelint-config-standard": "~22.0.0",
         "typescript": "~4.4.3",
         "vite": "~2.6.4"
-    },
-    "jest": {
-        "verbose": true,
-        "preset": "jest-puppeteer",
-        "globals": {
-            "__DEV__": true
-        },
-        "testRegex": "./test/*.spec.js",
-        "rootDir": ".",
-        "testTimeout": 30000
     }
 }
diff --git a/src/main.js b/src/main.js
index 79ba2d1d..14b87f49 100644
--- a/src/main.js
+++ b/src/main.js
@@ -43,3 +43,9 @@ app.component("Editable", contenteditable);
 app.component("FontAwesomeIcon", FontAwesomeIcon);
 
 app.mount("#app");
+
+// Expose the vue instance for development
+if (process.env.NODE_ENV === "development") {
+    console.log("Dev Only: window.app is the vue instance");
+    window.app = app._instance;
+}
diff --git a/src/util.js b/src/util.js
index 64ac2f6f..7fb50c5b 100644
--- a/src/util.js
+++ b/src/util.js
@@ -74,7 +74,7 @@ class TimeLogger {
         this.startTime = dayjs().valueOf();
     }
     print(name) {
-        if (exports.isDev && process && process.env.TIMELOGGER === "1") {
+        if (exports.isDev && process.env.TIMELOGGER === "1") {
             console.log(name + ": " + (dayjs().valueOf() - this.startTime) + "ms");
         }
     }
diff --git a/src/util.ts b/src/util.ts
index 45005049..6e911998 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -86,7 +86,7 @@ export class TimeLogger {
     }
 
     print(name: string) {
-        if (isDev && process && process.env.TIMELOGGER === "1") {
+        if (isDev && process.env.TIMELOGGER === "1") {
             console.log(name + ": " + (dayjs().valueOf() - this.startTime) + "ms")
         }
     }
diff --git a/test/test.spec.js b/test/test.spec.js
index 91c8459b..af8da323 100644
--- a/test/test.spec.js
+++ b/test/test.spec.js
@@ -2,6 +2,7 @@
 const { Page, Browser } = require("puppeteer");
 const { sleep } = require("../src/util");
 const axios = require("axios");
+const { currentLocale } = require("../src/i18n");
 
 /**
  * Set back the correct data type for page object
@@ -223,6 +224,14 @@ describe("Init", () => {
     });
 });
 
+describe("Test i18n.js", () => {
+
+    it("currentLocale()", () => {
+        expect(currentLocale()).toMatch("");
+    });
+
+});
+
 async function login(username, password) {
     await input(page, "#floatingInput", username);
     await input(page, "#floatingPassword", password);
diff --git a/test/test_install_script/ubuntu.dockerfile b/test/test_install_script/ubuntu.dockerfile
index 07d8a25a..fc9dcd3f 100644
--- a/test/test_install_script/ubuntu.dockerfile
+++ b/test/test_install_script/ubuntu.dockerfile
@@ -6,5 +6,4 @@ FROM ubuntu
 # RUN ln -s /usr/bin/nodejs /usr/bin/node
 # RUN node -v
 
-COPY ./install.sh .
-RUN bash install.sh local /opt/uptime-kuma 3000 0.0.0.0
+RUN curl -o kuma_install.sh http://git.kuma.pet/install.sh && bash kuma_install.sh local /opt/uptime-kuma 3000 0.0.0.0