Update Dockerfile

Dockerfile

@@ -33,6 +33,11 @@ RUN curl -sL https://deb.nodesource.com/setup_14.x  | bash - && \
 RUN apt install -y tesseract-ocr && \
     apt install -y tesseract-ocr-tha
 
+# Install Node to enable keplergl
+RUN npm cache clean -f && \
+    npm install -g n && \
+    n stable
+
 # Create a working directory
 WORKDIR /app