[armhf] Make Dockerfile.armhf compatible with main

Dockerfile now uses python:3.6 image while Dockerfile.armhf uses
debian. Python image is officially supported in ARM archtecture hence,
the now both dockerfiles differs only on dockerbins.tgz file version.

May we use environmental variables to select dockerbins.tgz?

Signed-off-by: Josenivaldo Benito Jr <jrbenito@benito.qsl.br>

Dockerfile.armhf

@@ -1,55 +1,21 @@
-FROM armhf/debian:wheezy
+FROM python:3.6
 
 RUN set -ex; \
     apt-get update -qq; \
     apt-get install -y \
         locales \
-        gcc \
-        make \
-        zlib1g \
-        zlib1g-dev \
-        libssl-dev \
-        git \
-        ca-certificates \
         curl \
-        libsqlite3-dev \
-        libbz2-dev \
-    ; \
-    rm -rf /var/lib/apt/lists/*
+        python-dev \
+        git
 
 RUN curl -fsSL -o dockerbins.tgz "https://download.docker.com/linux/static/stable/armhf/docker-17.12.0-ce.tgz" && \
+    SHA256=f8de6378dad825b9fd5c3c2f949e791d22f918623c27a72c84fd6975a0e5d0a2; \
+    echo "${SHA256}  dockerbins.tgz" | sha256sum -c - && \
     tar xvf dockerbins.tgz docker/docker --strip-components 1 && \
     mv docker /usr/local/bin/docker && \
     chmod +x /usr/local/bin/docker && \
     rm dockerbins.tgz
 
-# Build Python 2.7.13 from source
-RUN set -ex; \
-    curl -L https://www.python.org/ftp/python/2.7.13/Python-2.7.13.tgz | tar -xz; \
-    cd Python-2.7.13; \
-    ./configure --enable-shared; \
-    make; \
-    make install; \
-    cd ..; \
-    rm -rf /Python-2.7.13
-
-# Build python 3.6 from source
-RUN set -ex; \
-    curl -L https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz | tar -xz; \
-    cd Python-3.6.4; \
-    ./configure --enable-shared; \
-    make; \
-    make install; \
-    cd ..; \
-    rm -rf /Python-3.6.4
-
-# Make libpython findable
-ENV LD_LIBRARY_PATH /usr/local/lib
-
-# Install pip
-RUN set -ex; \
-    curl -L https://bootstrap.pypa.io/get-pip.py | python
-
 # Python3 requires a valid locale
 RUN echo "en_US.UTF-8 UTF-8" > /etc/locale.gen && locale-gen
 ENV LANG en_US.UTF-8
@@ -70,4 +36,4 @@ RUN tox --notest
 ADD . /code/
 RUN chown -R user /code/
 
-ENTRYPOINT ["/code/.tox/py27/bin/docker-compose"]
+ENTRYPOINT ["/code/.tox/py36/bin/docker-compose"]