Remove obsolete code that slows down test execution

Signed-off-by: Joffrey F <joffrey@docker.com>

Dockerfile

@@ -1,21 +1,12 @@
-FROM 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/x86_64/docker-17.12.0-ce.tgz" && \
     SHA256=692e1c72937f6214b1038def84463018d8e320c8eaf8530546c84c2f8f9c767d; \
@@ -25,44 +16,6 @@ RUN curl -fsSL -o dockerbins.tgz "https://download.docker.com/linux/static/stabl
     chmod +x /usr/local/bin/docker && \
     rm dockerbins.tgz
 
-# Build Python 2.7.13 from source
-RUN set -ex; \
-    curl -LO https://www.python.org/ftp/python/2.7.13/Python-2.7.13.tgz && \
-    SHA256=a4f05a0720ce0fd92626f0278b6b433eee9a6173ddf2bced7957dfb599a5ece1; \
-    echo "${SHA256}  Python-2.7.13.tgz" | sha256sum -c - && \
-    tar -xzf Python-2.7.13.tgz; \
-    cd Python-2.7.13; \
-    ./configure --enable-shared; \
-    make; \
-    make install; \
-    cd ..; \
-    rm -rf /Python-2.7.13; \
-    rm Python-2.7.13.tgz
-
-# Build python 3.6 from source
-RUN set -ex; \
-    curl -LO https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz && \
-    SHA256=9de6494314ea199e3633211696735f65; \
-    echo "${SHA256}  Python-3.6.4.tgz" | md5sum -c - && \
-    tar -xzf Python-3.6.4.tgz; \
-    cd Python-3.6.4; \
-    ./configure --enable-shared; \
-    make; \
-    make install; \
-    cd ..; \
-    rm -rf /Python-3.6.4; \
-    rm Python-3.6.4.tgz
-
-# Make libpython findable
-ENV LD_LIBRARY_PATH /usr/local/lib
-
-# Install pip
-RUN set -ex; \
-    curl -LO https://bootstrap.pypa.io/get-pip.py && \
-    SHA256=19dae841a150c86e2a09d475b5eb0602861f2a5b7761ec268049a662dbd2bd0c; \
-    echo "${SHA256}  get-pip.py" | sha256sum -c - && \
-    python get-pip.py
-
 # Python3 requires a valid locale
 RUN echo "en_US.UTF-8 UTF-8" > /etc/locale.gen && locale-gen
 ENV LANG en_US.UTF-8
@@ -83,4 +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"]

compose/cli/__init__.py

@@ -1,49 +0,0 @@
-from __future__ import absolute_import
-from __future__ import print_function
-from __future__ import unicode_literals
-
-import os
-import subprocess
-import sys
-
-# Attempt to detect https://github.com/docker/compose/issues/4344
-try:
-    # We don't try importing pip because it messes with package imports
-    # on some Linux distros (Ubuntu, Fedora)
-    # https://github.com/docker/compose/issues/4425
-    # https://github.com/docker/compose/issues/4481
-    # https://github.com/pypa/pip/blob/master/pip/_vendor/__init__.py
-    env = os.environ.copy()
-    env[str('PIP_DISABLE_PIP_VERSION_CHECK')] = str('1')
-
-    s_cmd = subprocess.Popen(
-        # DO NOT replace this call with a `sys.executable` call. It breaks the binary
-        # distribution (with the binary calling itself recursively over and over).
-        ['pip', 'freeze'], stderr=subprocess.PIPE, stdout=subprocess.PIPE,
-        env=env
-    )
-    packages = s_cmd.communicate()[0].splitlines()
-    dockerpy_installed = len(
-        list(filter(lambda p: p.startswith(b'docker-py=='), packages))
-    ) > 0
-    if dockerpy_installed:
-        from .colors import yellow
-        print(
-            yellow('WARNING:'),
-            "Dependency conflict: an older version of the 'docker-py' package "
-            "may be polluting the namespace. "
-            "If you're experiencing crashes, run the following command to remedy the issue:\n"
-            "pip uninstall docker-py; pip uninstall docker; pip install docker",
-            file=sys.stderr
-        )
-
-except OSError:
-    # pip command is not available, which indicates it's probably the binary
-    # distribution of Compose which is not affected
-    pass
-except UnicodeDecodeError:
-    # ref: https://github.com/docker/compose/issues/4663
-    # This could be caused by a number of things, but it seems to be a
-    # python 2 + MacOS interaction. It's not ideal to ignore this, but at least
-    # it doesn't make the program unusable.
-    pass