Update Dockerfile

Dockerfile

@@ -30,8 +30,6 @@ RUN rm -f /etc/apt/sources.list.d/*.list && \
     software-properties-common \
  && rm -rf /var/lib/apt/lists/*
 
-RUN pip install --no-cache-dir --upgrade -r requirements.txt
-
 RUN add-apt-repository ppa:flexiondotorg/nvtop && \
     apt-get upgrade -y && \
     apt-get install -y --no-install-recommends nvtop
@@ -42,6 +40,7 @@ RUN curl -sL https://deb.nodesource.com/setup_14.x  | bash - && \
 
 # Create a working directory
 WORKDIR /app
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
 # Create a non-root user and switch to it
 RUN adduser --disabled-password --gecos '' --shell /bin/bash user \