fix: Upgrade Python3 to 3.7 instead of 3.5

Some packages require higher versions to be installed

docker/Dockerfile.python-2

@@ -1,19 +1,23 @@
-FROM node:8-slim
+FROM python:2.7-slim
 
 MAINTAINER Snyk Ltd
 
+RUN mkdir /home/node
 WORKDIR /home/node
-ENV HOME /home/node
 
-# Install python, virtualenv, cli
-RUN apt-get update && \
-    apt-get install -y python python-dev python-pip libssl-dev jq && \
-    pip install pip virtualenv -U && \
+# Install Python utilities, node, Snyk CLI
+RUN pip3 install pip pipenv virtualenv -U && \
+    apt-get update && \
+    apt-get install -y curl && \
+    curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
+    apt-get install -y nodejs jq && \
     npm install --global snyk snyk-to-html && \
     apt-get autoremove -y && \
     apt-get clean && \
     chmod -R a+wrx /home/node
 
+ENV HOME /home/node
+
 # The path at which the project is mounted (-v runtime arg)
 ENV PROJECT_PATH /project
 

docker/Dockerfile.python-3

@@ -1,21 +1,23 @@
-FROM node:8-slim
+FROM python:3.7-slim
 
 MAINTAINER Snyk Ltd
 
+RUN mkdir /home/node
 WORKDIR /home/node
-ENV HOME /home/node
 
-# Install python, virtualenv and cli
-RUN apt-get update && \
-    apt-get install -y python3 python3-dev python3-pip libssl-dev jq && \
-    pip3 install pip pipenv virtualenv -U && \
-    ln -s /usr/bin/python3 /usr/bin/python && \
-    ln -s /usr/bin/pip3 /usr/bin/pip && \
+# Install Python utilities, node, Snyk CLI
+RUN pip3 install pip pipenv virtualenv -U && \
+    apt-get update && \
+    apt-get install -y curl && \
+    curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
+    apt-get install -y nodejs jq && \
     npm install --global snyk snyk-to-html && \
     apt-get autoremove -y && \
     apt-get clean && \
     chmod -R a+wrx /home/node
 
+ENV HOME /home/node
+
 # The path at which the project is mounted (-v runtime arg)
 ENV PROJECT_PATH /project