Initial checkin of gRPC to third_party/

third_party/grpc/tools/dockerfile/grpc_interop_go/Dockerfile

Index: third_party/grpc/tools/dockerfile/grpc_interop_go/Dockerfile
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/common/system/environment.py b/third_party/grpc/tools/dockerfile/grpc_interop_go/Dockerfile
similarity index 87%
copy from third_party/WebKit/Tools/Scripts/webkitpy/common/system/environment.py
copy to third_party/grpc/tools/dockerfile/grpc_interop_go/Dockerfile
index a37bd31d9bfd498549dc9b1bf28a6b8c002bbf12..f83e18c8a3182b0488e93b30b82e1489728aa17b 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/common/system/environment.py
+++ b/third_party/grpc/tools/dockerfile/grpc_interop_go/Dockerfile
@@ -1,4 +1,5 @@
-# Copyright (C) 2011 Google Inc. All rights reserved.
+# 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
@@ -26,11 +27,10 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+FROM golang:1.4
 
-class Environment(object):
+# Using login shell removes Go from path, so we add it.
+RUN ln -s /usr/src/go/bin/go /usr/local/bin
 
-    def __init__(self, env=None):
-        self.env = env or {}
-
-    def to_dictionary(self):
-        return self.env
+# Define the default command.
+CMD ["bash"]