diff --git a/Dockerfile b/Dockerfile
index c653e47..5cc0b12 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,34 @@
 FROM ubuntu:18.04
 
+# Environment variables
+ENV NODE_VERSION 12.8.0
+ENV NPM_VERSION 3.5.2
+ENV NVM_DIR /usr/local/nvm
+ENV NVM_VERSION 0.34.0
+ENV PYTHON_VERSION 3.6.7-1~18.04
+ENV PATH /jepostule/node_modules/.bin/:${PATH}
+ENV DJANGO_SETTINGS_MODULE config.settings.local
+ENV LANG C.UTF-8
+
 RUN apt update -y && \
-    apt install -y python3 python3-pip postgresql-client-common npm
+    apt install -y  \
+        python3=$PYTHON_VERSION \
+        python3-pip \
+        postgresql-client-common \
+        curl \
+        npm=$NPM_VERSION-0ubuntu4
 RUN ln -s /usr/bin/python3 /usr/local/bin/python
 RUN ln -s /usr/bin/pip3 /usr/local/bin/pip
 
+# Install NVM
+RUN mkdir $NVM_DIR
+RUN curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v$NVM_VERSION/install.sh | bash
+
+# Install NodeJS with NVM
+RUN /bin/bash -c "source $NVM_DIR/nvm.sh \
+    && nvm install $NODE_VERSION \
+    && nvm use $NODE_VERSION"
+
 WORKDIR /jepostule
 
 # Install python requirements
@@ -12,14 +36,12 @@ COPY ./requirements/ ./requirements/
 RUN pip install -r requirements/prod.txt
 
 COPY . /jepostule
-ENV PATH /jepostule/node_modules/.bin/:${PATH}
-ENV DJANGO_SETTINGS_MODULE config.settings.local
-ENV LANG C.UTF-8
-EXPOSE 8000
 
 # Install frontend requirements
 RUN npm install --unsafe-perm
 
+EXPOSE 8000
+
 RUN mkdir -p /var/log/uwsgi
 CMD uwsgi --module=config.wsgi:application \
     --master \
diff --git a/README.md b/README.md
index 1eff79c..fa6b298 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,9 @@ On partner websites, the user can click on "Je Postule" buttons for each display
     ./manage.py consumetopics all
     ./manage.py dequeuedelayed
 
+NodeJS version: `12.8.0` (see [`Dockerfile`](/Dockerfile) and [`package.json`](/package.json)).
+Python requirements: see the [requirements](/requirements) folder. This project uses Python `3.6`.
+
 ### Install
 
 #### System dependencies
@@ -139,7 +142,7 @@ Run unit tests with code coverage:
 
 The home page should redirect you to the embed demo page (useful to test if your installation worked!).
 To make it work, you must:
-- create a client platform (see section [Create client platform](#create-client-platform))
+- create a client platform (see section [Client platform creation](#client-platform-creation))
 - add these parameters to the demo page URL: `client_id` and `client_secret`.
 
 Example: `/embed/demo/?client_id=<client_id>&client_secret=<client_secret>`
diff --git a/package.json b/package.json
index 43e3019..f4de2d0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,11 @@
 {
   "name": "jepostule",
   "version": "0.0.1",
+  "engineStrict": true,
+  "engines": {
+    "node": "12.8.0"
+  },
+  "private": true,
   "dependencies": {
     "jquery-datetimepicker": "^2.5.21",
     "yuglify": "^2.0.0",