Update Dockerfile

Dockerfile

@@ -16,9 +16,9 @@ WORKDIR /app/
 COPY . .
 
 
-RUN pip install --upgrade pip setuptools
-RUN pip3 install -U motor
-RUN pip3 install -r requirements.txt
+RUN pip install --no-cache-dir --upgrade pip setuptools
+RUN pip install --no-cache-dir -U motor
+RUN pip install --no-cache-dir -r requirements.txt
 
 RUN chown -R 1000:0 .
 RUN chmod 777 .