Also fix the compilation of 3.8

templates/tools/dockerfile/compile_python_36.include

@@ -5,11 +5,15 @@ RUN apt-get update && apt-get install -y zlib1g-dev libssl-dev
 RUN apt-get update && apt-get install -y jq build-essential libffi-dev
 
 RUN cd /tmp && ${'\\'}
-wget -q https://www.python.org/ftp/python/3.6.9/Python-3.6.9.tgz && ${'\\'}
+    wget -q https://www.python.org/ftp/python/3.6.9/Python-3.6.9.tgz && ${'\\'}
-tar xzvf Python-3.6.9.tgz && ${'\\'}
+    tar xzvf Python-3.6.9.tgz && ${'\\'}
-cd Python-3.6.9 && ${'\\'}
+    cd Python-3.6.9 && ${'\\'}
-./configure && ${'\\'}
+    ./configure && ${'\\'}
-make install
+    make install
+
+RUN cd /tmp && ${'\\'}
+    echo "ff7cdaef4846c89c1ec0d7b709bbd54d Python-3.6.9.tgz" > checksum.md5 && ${'\\'}
+    md5sum -c checksum.md5
 
 RUN python3.6 -m ensurepip && ${'\\'}
-    python3.6 -m pip install coverage
+    python3.6 -m pip install coverage

templates/tools/dockerfile/compile_python_38.include

@@ -0,0 +1,19 @@
+#=================
+# Compile CPython 3.8.0b4 from source
+
+RUN apt-get update && apt-get install -y zlib1g-dev libssl-dev
+RUN apt-get update && apt-get install -y jq build-essential libffi-dev
+
+RUN cd /tmp && ${'\\'}
+    wget -q https://www.python.org/ftp/python/3.8.0/Python-3.8.0b4.tgz && ${'\\'}
+    tar xzvf Python-3.8.0b4.tgz && ${'\\'}
+    cd Python-3.8.0b4 && ${'\\'}
+    ./configure && ${'\\'}
+    make install
+
+RUN cd /tmp && ${'\\'}
+    echo "b8f4f897df967014ddb42033b90c3058 Python-3.8.0b4.tgz" > checksum.md5 && ${'\\'}
+    md5sum -c checksum.md5
+
+RUN python3.8 -m ensurepip && ${'\\'}
+    python3.8 -m pip install coverage

templates/tools/dockerfile/test/python_stretch_3.8_x64/Dockerfile.template

@@ -16,16 +16,4 @@
   # limitations under the License.
 
   <%include file="../../python_stretch.include"/>
-  RUN apt-get install -y jq zlib1g-dev libssl-dev
+  <%include file="../../compile_python_38.include"/>
-
-  RUN apt-get install -y jq build-essential libffi-dev
-
-  RUN cd /tmp && ${'\\'}
-    wget -q https://github.com/python/cpython/archive/v3.8.0b3.tar.gz && ${'\\'}
-    tar xzvf v3.8.0b3.tar.gz && ${'\\'}
-    cd cpython-3.8.0b3 && ${'\\'}
-    ./configure && ${'\\'}
-    make install
-
-  RUN python3.8 -m ensurepip && ${'\\'}
-      python3.8 -m pip install coverage

templates/tools/dockerfile/test/python_stretch_default_x64/Dockerfile.template

@@ -16,16 +16,9 @@
 
   <%include file="../../python_stretch.include"/>
   <%include file="../../compile_python_36.include"/>
-
+  
-  RUN cd /tmp && ${'\\'}
-    echo "ff7cdaef4846c89c1ec0d7b709bbd54d Python-3.6.9.tgz" > checksum.md5 && ${'\\'}
-    md5sum -c checksum.md5
-
   RUN apt-get update && apt-get -t buster install -y python3.7 python3-all-dev
   RUN curl https://bootstrap.pypa.io/get-pip.py | python3.7
 
   # for Python test coverage reporting
   RUN python3.7 -m pip install coverage
-
-  RUN python3.6 -m ensurepip && ${'\\'}
-      python3.6 -m pip install coverage