Dockerfile updated

Dockerfile

@@ -1,16 +1,20 @@
 # Source image
-FROM node
+FROM node:10.15.0
+# Set the api url as an envieroment variable for the build process
+ARG API_URL="http://localhost:4000/"
+ENV API_URL=$API_URL
 # Set environment port and expose it
 ARG PORT=3000
 ENV PORT=$PORT
 EXPOSE $PORT
 # Update npm to its latest version
 RUN npm i npm@latest -g
-# Copy directory and install dependencies from the project
+# Move to the home directory
+WORKDIR /home/app
+# Clone repository
+RUN git clone --single-branch --branch master https://github.com/pedro-rodalia/iot-frontend.git
+# Move to the directory and install dependencies from the project
 WORKDIR /home/app/iot-frontend
-COPY package.json ./
-RUN npm install
-# Copy the source code
-COPY . .
+RUN npm install && npm run build
 # Run the app
 CMD ["node", "./bin/www"]