Upgrade to Python3.6.13

Dockerfile

@@ -1,9 +1,48 @@
 FROM openjdk:8
 
+ENV DEBIAN_FRONTEND=noninteractive
+
 LABEL com.amazonaws.sagemaker.capabilities.accept-bind-to-port=true
 
 RUN apt-get update && apt-get -y install apt-utils net-tools apt-transport-https wget curl nginx git maven
 
+RUN apt -y update
+RUN apt -y install python3.6
+
+ARG OPENSSL_VERSION=1.1.1g
+ARG PYTHON=python3
+ARG PIP=pip3
+ARG PYTHON_VERSION=3.6.13
+
+# Open-SSL
+RUN wget -q -c https://www.openssl.org/source/openssl-${OPENSSL_VERSION}.tar.gz \
+ && tar -xzf openssl-${OPENSSL_VERSION}.tar.gz \
+ && cd openssl-${OPENSSL_VERSION} \
+ && ./config && make -j $(nproc) && make install \
+ && ldconfig \
+ && cd .. && rm -rf openssl-* \
+ && rmdir /usr/local/ssl/certs \
+ && ln -s /etc/ssl/certs /usr/local/ssl/certs
+
+# Install Python-3.6.13 from source
+RUN wget -q https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tgz \
+ && tar -xzf Python-$PYTHON_VERSION.tgz \
+ && cd Python-$PYTHON_VERSION \
+ && ./configure \
+ && make -j $(nproc) && make install \
+ && cd .. && rm -rf ../Python-$PYTHON_VERSION* \
+ && ln -s /usr/local/bin/pip3 /usr/bin/pip \
+ && ln -s /usr/local/bin/$PYTHON /usr/local/bin/python \
+ && ${PIP} --no-cache-dir install --upgrade pip
+
+# Remove other Python installations.
+RUN apt -y purge --auto-remove libpython2.7 \
+ && apt -y purge --auto-remove libpython3.7 \
+ && apt -y purge --auto-remove python3.7 \
+ && apt -y purge --auto-remove python2.7 \
+ && apt-get clean \
+ && rm -rf /var/lib/apt/lists/*
+
 COPY / /sagemaker-sparkml-model-server
 WORKDIR /sagemaker-sparkml-model-server