diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1a4e9df..2c3eddc 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -39,7 +39,7 @@ jobs:
 
   vault:
     docker:
-      - image: circleci/node:10
+      - image: circleci/node:10-browsers
     working_directory: ~/offen/vault
     steps:
       - checkout:
@@ -55,7 +55,7 @@ jobs:
           key: offen-vault-{{ checksum "package.json" }}
       - run:
           name: Run tests
-          command: npm test
+          command: npm test -- --allow-chrome-as-root
 
 workflows:
   version: 2
diff --git a/README.md b/README.md
index fffd36d..6d5b527 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,8 @@ To work on the `vault` you will need to install `docker-compose`.
 First, install the project's dependencies:
 
 ```
-docker-compose run vault npm install
+cd vault
+npm install
 ```
 
 Run the server:
@@ -53,7 +54,8 @@ docker-compose up
 Run the tests:
 
 ```
-docker-compose run vault npm test
+cd vault
+npm test
 ```
 
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 687be1c..04a56ff 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -19,10 +19,10 @@ database:
     - POSTGRES_PASSWORD=develop
 
 vault:
-  image: node:10-alpine
+  image: node:10
   working_dir: /vault
   volumes:
     - ./vault:/vault
-  command: npm start
+  command: npm start -- --port 9977
   ports:
-    - 3000:3000
+    - 9977:9977