Fix Docker Problem (#1785)

Dockerfile

@@ -1,4 +1,5 @@
-FROM bitnami/minideb:latest
+FROM ubuntu:latest
+ENV DEBIAN_FRONTEND noninteractive
 
 Label MAINTAINER Amir Pourmand
 
@@ -8,8 +9,8 @@ RUN apt-get update -y && apt-get install -y --no-install-recommends \
     ruby-full \
     build-essential \
     zlib1g-dev \
-    python3-pip && rm -rf /var/lib/apt/lists/*
-    
+    jupyter-nbconvert && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* /var/cache/apt/archives/*
 
 RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && \
     locale-gen
@@ -19,8 +20,6 @@ ENV LANG=en_US.UTF-8 \
     LC_ALL=en_US.UTF-8 \
     JEKYLL_ENV=production
 
-RUN python3 -m pip install jupyter --break-system-packages --no-cache-dir
-
 # install jekyll and dependencies
 RUN gem install jekyll bundler