Update python version

Dockerfile

@@ -1,4 +1,4 @@
-FROM nvidia/cuda:11.7.1-runtime-ubuntu20.04
+FROM nvidia/cuda:11.7.1-runtime-ubuntu22.04
 
 RUN apt update && \
     apt install -y bash \
@@ -10,8 +10,13 @@ RUN apt update && \
                    python3-pip && \
     rm -rf /var/lib/apt/lists
 
-RUN python3 -m pip install --no-cache-dir --upgrade pip && \
-    python3 -m pip install --no-cache-dir --extra-index-url https://download.pytorch.org/whl/cu113 \
+RUN apt install software-properties-common && add-apt-repository ppa:deadsnakes/ppa && \
+    apt update && apt install python3.9 && \
+    rm -rf /var/lib/apt/lists
+RUN rm -f /usr/bin/python && ln -s /usr/bin/python /usr/bin/python3.9
+
+RUN python3.9 -m pip install --no-cache-dir --upgrade pip && \
+    python33.9 -m pip install --no-cache-dir --extra-index-url https://download.pytorch.org/whl/cu113 \
     torch \
     torchvision \
     torchaudio
@@ -20,11 +25,11 @@ WORKDIR /code
 
 COPY ./requirements.txt /code/requirements.txt
 
-RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
+RUN python3.9 -m pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install ffmpeg libsm6 libxext6  -y && rm -rf /var/lib/apt/lists
 
-RUN pip install --no-cache-dir git+https://github.com/bowang-lab/MedSAM.git
+RUN python3.9 -m pip install --no-cache-dir git+https://github.com/bowang-lab/MedSAM.git
 
 # Set up a new user named "user" with user ID 1000
 RUN useradd -m -u 1000 user
@@ -41,4 +46,4 @@ WORKDIR $HOME/app
 # Copy the current directory contents into the container at $HOME/app setting the owner to the user
 COPY --chown=user . $HOME/app
 
-CMD ["streamlit", "run", "app.py"]
+CMD ["python3.9", "-m", "streamlit", "run", "app.py"]