Update Dockerfile

Dockerfile

@@ -1,4 +1,4 @@
-# Download base image ubuntu 18.04
+# Download base image: latest Ubuntu LTS
 FROM ubuntu:22.04
 
 # Set environment variables
@@ -8,14 +8,14 @@ ENV HOME /home/${NB_USER}
 ENV JAVA_HOME /usr/lib/jvm/java-17-openjdk-amd64/
 
 # Install required packages
-RUN apt-get update && apt-get install -y \
+RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y \
     tar \
     wget \
     bash \
     rsync \
     gcc \
     libfreetype6-dev \
-    libhdf5-serial-dev \
+    libhdf5-dev \
     libpng-dev \
     libzmq3-dev \
     python3 \
@@ -31,15 +31,16 @@ RUN apt-get update && apt-get install -y \
     && apt-get clean \
     && update-ca-certificates -f
 
-# Install Python 3.8 and pip
+# Install Python 3.11 (latest stable version)
 RUN add-apt-repository ppa:deadsnakes/ppa \
-    && apt-get update \
-    && apt-get install -y python3.11 python3-pip \
+    && DEBIAN_FRONTEND=noninteractive apt-get update \
+    && apt-get install -y python3.11 python3.11-venv python3.11-dev python3-pip \
     && apt-get clean
 
 # Set up JAVA_HOME
 RUN echo "export JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64/" >> /etc/profile \
     && echo "export PATH=\$JAVA_HOME/bin:\$PATH" >> /etc/profile
+
 # Create a new user named "jovyan" with user ID 1000
 RUN useradd -m -u ${NB_UID} ${NB_USER}
 
@@ -50,7 +51,7 @@ USER ${NB_USER}
 ENV HOME=/home/${NB_USER} \
     PATH=/home/${NB_USER}/.local/bin:$PATH
 
-# Set up PySpark to use Python 3.8 for both driver and workers
+# Set up PySpark to use Python 3.11 for both driver and workers
 ENV PYSPARK_PYTHON=/usr/bin/python3.11
 ENV PYSPARK_DRIVER_PYTHON=/usr/bin/python3.11
 
@@ -69,4 +70,4 @@ COPY --chown=${NB_USER}:${NB_USER} . ${HOME}
 EXPOSE 7860
 
 # Define the entry point for the container
-ENTRYPOINT ["streamlit", "run", "Demo.py", "--server.port=7860", "--server.address=0.0.0.0"]
+ENTRYPOINT ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]