Initial checkin of gRPC to third_party/

third_party/grpc/tools/dockerfile/distribtest/python_centos6_x64/Dockerfile

-# Copyright 2010, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
 # in the documentation and/or other materials provided with the
 # distribution.
 #     * Neither the name of Google Inc. nor the names of its
 # contributors may be used to endorse or promote products derived from
 # this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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+FROM centos:6
 
-from mod_pywebsocket import msgutil
+RUN yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
 
+# Vanilla CentOS6 only has python 2.6 and we don't support that.
+RUN yum -y install yum -y install https://centos6.iuscommunity.org/ius-release.rpm
+RUN yum install -y python27
 
-_GOODBYE_MESSAGE = 'Goodbye'
+# Override python2.6
+RUN ln -s /usr/bin/python2.7 /usr/local/bin/python
+RUN ln -s /usr/bin/python2.7 /usr/local/bin/python2
 
+# Install pip
+RUN curl https://bootstrap.pypa.io/get-pip.py | python -
 
-def web_socket_do_extra_handshake(request):
-    pass  # Always accept.
-
-
-def web_socket_transfer_data(request):
-    while True:
-        line = msgutil.receive_message(request)
-        msgutil.send_message(request, line)
-        if line == _GOODBYE_MESSAGE:
-            return
+# "which" command required by python's run_distrib_test.sh
+RUN yum install -y which