diff --git a/Dockerfile b/Dockerfile
index 434d372..b371da9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,9 +12,9 @@ RUN npm ci
 # https://code.visualstudio.com/remote/advancedcontainers/add-nonroot-user
 USER node
 
-ARG INSTANCE_COUCH_URL
-ENV COUCH_URL=INSTANCE_COUCH_URL
+ENV FILE=""
+ENV COUCH_URL=""
 
 VOLUME /app/test-data
-ARG FILE
-ENTRYPOINT ["npm", "run", "generate", "test-data/$FILE"]
+
+ENTRYPOINT npm run generate test-data/$FILE
diff --git a/README.md b/README.md
index f69f8cf..fbe5384 100644
--- a/README.md
+++ b/README.md
@@ -19,8 +19,8 @@ Design the test data that fit your project hierarchy and reports. The tool will
 
 ## Minimum System Requirements 
 
-- npm >= 8.0.0
-- node >= 16.0.0
+- npm >= 10.2.4
+- node >= 20.11.0
 
 ## Setup and Getting Started
 
@@ -28,10 +28,21 @@ Instructions on setting up the project and getting it running on a local machine
 
 - Set the `COUCH_URL` environment variable to point your test instance, for example it is something similar to this: `http://[user]:[pass]@[host]:[port]/medic`
 - Double-check your CHT test instance is running
-- Clone or fork the repository
-- Install the project globally by running `npm install -g`.
+- Clone or fork the test data generator repository
+- Install and build the project by running `npm ci` in the project root folder
 - Design the test data in a custom JavaScript file. See section [Designing Test Data](#designing-test-data).
-- Build, generate data and upload by running `test-data-generator *path_to_your_custom_design_file*`
+- Build, generate data and upload by running `npm run generate *path_to_your_custom_design_file*`
+
+### Install it globally
+Another option is to install the tool globally:
+- Build the project `npm run build`
+- Run `npm install -g` in the project root folder
+- Build, generate and upload data by running `test-data-generator <path_to_your_custom_design_file>`.
+
+### Use it with Docker
+The tool is also available in Docker:
+- Create the image `docker build -t test-data-generator .`
+- Run the container `docker run --rm -it -v <folder_path_of_your_design_file>:/app/test-data -e COUCH_URL=<test_instance_CouchDB_URL> -e FILE=<your_design_file> test-data-generator`
 
 ## Designing Test Data
 
@@ -39,7 +50,7 @@ Steps to design the test data:
 
 1. Create a custom JavaScript file that exports a `default` function. This function should match the [`DocDesign` type](./src/doc-design.ts).
 2. Your custom function should return an array of [`DesignSpec`](./src/doc-design.ts) objects that define the structure of your data to create.
-3. Generate and upload data `test-data-generator *path_to_your_custom_design_file*`. That's all! You can check the data in the CHT's CouchDB.
+3. Generate and upload data `npm run generate *path_to_your_custom_design_file*`. That's all! You can check the data in the CHT's CouchDB.
 
 Note that `getDoc` function should return an object with at least a `type: string`. Remember that `type` is a `data_record` for reports, but when it comes to contacts, use the `contact_types` defined in your CHT project's `app-settings.json`. 
 
diff --git a/package.json b/package.json
index 32fba64..af61161 100644
--- a/package.json
+++ b/package.json
@@ -9,10 +9,11 @@
     "npm": ">=10.2.4"
   },
   "scripts": {
+    "postinstall": "npm run build",
     "test": "mocha",
     "lint": "eslint .",
     "build": "npm run lint && tsc",
-    "generate": "npm run build && echo 'Processing, please wait.' && node built/."
+    "generate": "node built/."
   },
   "bin": {
     "test-data-generator": "built/index.js"