diff --git a/templates/tools/dockerfile/clang_format.include b/templates/tools/dockerfile/clang_format.include
new file mode 100644
index 0000000000000000000000000000000000000000..9a2b60ba8c47bd47906d2279203d472e7ed4234c
--- /dev/null
+++ b/templates/tools/dockerfile/clang_format.include
@@ -0,0 +1,5 @@
+RUN apt-get update && apt-get -y install wget
+RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
+RUN apt-get update && apt-get -y install clang-format-3.8
diff --git a/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template b/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template
new file mode 100644
index 0000000000000000000000000000000000000000..8360fc121c1803828ef96e1e24e3bb942ecd1020
--- /dev/null
+++ b/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template
@@ -0,0 +1,37 @@
+%YAML 1.2
+--- |
+  # Copyright 2015, 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
+  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  # (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 ubuntu:15.10
+  
+  <%include file="../clang_format.include"/>
+  ADD clang_format_all_the_things.sh /
+  CMD ["echo 'Run with tools/distrib/clang_format_code.sh'"]
+  
diff --git a/templates/tools/dockerfile/test/sanity/Dockerfile.template b/templates/tools/dockerfile/test/sanity/Dockerfile.template
index 01683539334cd0826ddba1d8192a65ab5c6b4b61..8617666b21eb2f36395794caf85fa90d4d330f5f 100644
--- a/templates/tools/dockerfile/test/sanity/Dockerfile.template
+++ b/templates/tools/dockerfile/test/sanity/Dockerfile.template
@@ -52,18 +52,12 @@
   # ./compile.sh without a local protoc dependency
   # TODO(mattkwong): install dependencies to support latest Bazel version if newer
   # version is needed
-  RUN git clone https://github.com/bazelbuild/bazel.git /bazel && \
+  RUN git clone https://github.com/bazelbuild/bazel.git /bazel && ${"\\"}
     cd /bazel && git checkout tags/0.4.1 && ./compile.sh
   RUN ln -s /bazel/output/bazel /bin/
   
-  #===================
-  # Docker "inception"
-  # Note this is quite the ugly hack.
-  # This makes sure that the docker binary we inject has its dependencies.
-  RUN curl https://get.docker.com/ | sh
-  RUN apt-get remove --purge -y docker-engine
-  
-  RUN mkdir /var/local/jenkins
+  <%include file="../../clang_format.include"/>
+  <%include file="../../run_tests_addons.include"/>
   
   # Define the default command.
   CMD ["bash"]
diff --git a/tools/distrib/check_nanopb_output.sh b/tools/distrib/check_nanopb_output.sh
index c0707051a60a81ffd08b15eb5919fa1c127e9efe..eb64e23daf760dc5b93603d6208a3e3bc86d162a 100755
--- a/tools/distrib/check_nanopb_output.sh
+++ b/tools/distrib/check_nanopb_output.sh
@@ -37,7 +37,7 @@ readonly PROTOBUF_INSTALL_PREFIX="$(mktemp -d)"
 pushd third_party/protobuf
 ./autogen.sh
 ./configure --prefix="$PROTOBUF_INSTALL_PREFIX"
-make
+make -j 8
 make install
 #ldconfig
 popd
@@ -51,7 +51,7 @@ fi
 # stack up and change to nanopb's proto generator directory
 pushd third_party/nanopb/generator/proto
 export PATH="$PROTOC_BIN_PATH:$PATH"
-make
+make -j 8
 # back to the root directory
 popd
 
diff --git a/tools/distrib/clang_format_code.sh b/tools/distrib/clang_format_code.sh
index 858e07489816a7f59f273e058c9d7310db2df319..13e018709fe93a06f2f86fbc83ef40e9a8931aee 100755
--- a/tools/distrib/clang_format_code.sh
+++ b/tools/distrib/clang_format_code.sh
@@ -32,9 +32,15 @@ set -ex
 
 # change to root directory
 cd $(dirname $0)/../..
+REPO_ROOT=$(pwd)
 
-# build clang-format docker image
-docker build -t grpc_clang_format tools/dockerfile/grpc_clang_format
+if [ "$CLANG_FORMAT_SKIP_DOCKER" == "" ]
+then
+  # build clang-format docker image
+  docker build -t grpc_clang_format tools/dockerfile/grpc_clang_format
 
-# run clang-format against the checked out codebase
-docker run -e TEST=$TEST -e CHANGED_FILES="$CHANGED_FILES" --rm=true -v ${HOST_GIT_ROOT:-`pwd`}:/local-code -t grpc_clang_format /clang_format_all_the_things.sh
+  # run clang-format against the checked out codebase
+  docker run -e TEST=$TEST -e CHANGED_FILES="$CHANGED_FILES" -e CLANG_FORMAT_ROOT="/local-code" --rm=true -v "${REPO_ROOT}":/local-code -t grpc_clang_format /clang_format_all_the_things.sh
+else
+  CLANG_FORMAT_ROOT="${REPO_ROOT}" tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
+fi
diff --git a/tools/dockerfile/grpc_clang_format/Dockerfile b/tools/dockerfile/grpc_clang_format/Dockerfile
index ab58017a02af8937b6b1c393e16032c6250618b6..85f5e4db74a639388fb9458f986e45d9aea44ead 100644
--- a/tools/dockerfile/grpc_clang_format/Dockerfile
+++ b/tools/dockerfile/grpc_clang_format/Dockerfile
@@ -27,13 +27,13 @@
 # (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 ubuntu:wily
-RUN apt-get update
-RUN apt-get -y install wget
+FROM ubuntu:15.10
+
+RUN apt-get update && apt-get -y install wget
 RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
 RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
 RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
-RUN apt-get update
-RUN apt-get -y install clang-format-3.8
+RUN apt-get update && apt-get -y install clang-format-3.8
+
 ADD clang_format_all_the_things.sh /
 CMD ["echo 'Run with tools/distrib/clang_format_code.sh'"]
diff --git a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
index 462c65ab5e9be20dcc582c7916b3391020b83cb7..c6e4aabfe63fcb88f4e961451699275f753c1bb5 100755
--- a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
+++ b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
@@ -44,7 +44,7 @@ for dir in $DIRS
 do
   for glob in $GLOB
   do
-    files="$files `find /local-code/$dir -name $glob -and -not -name *.generated.* -and -not -name *.pb.h -and -not -name *.pb.c -and -not -name *.pb.cc`"
+    files="$files `find ${CLANG_FORMAT_ROOT}/$dir -name $glob -and -not -name *.generated.* -and -not -name *.pb.h -and -not -name *.pb.c -and -not -name *.pb.cc`"
   done
 done
 
@@ -54,7 +54,7 @@ if [ -n "$CHANGED_FILES" ]; then
   files=$(comm -12 <(echo $files | tr ' ' '\n' | sort -u) <(echo $CHANGED_FILES | tr ' ' '\n' | sort -u))
 fi
 
-if [ "x$TEST" = "x" ]
+if [ "$TEST" == "" ]
 then
   echo $files | xargs $CLANG_FORMAT -i
 else
diff --git a/tools/dockerfile/test/sanity/Dockerfile b/tools/dockerfile/test/sanity/Dockerfile
index 6b19ac845b4813598ab6ef889468c79cb06d6496..811384fda14f996fae5606e83af4cf852e6064d2 100644
--- a/tools/dockerfile/test/sanity/Dockerfile
+++ b/tools/dockerfile/test/sanity/Dockerfile
@@ -97,17 +97,27 @@ RUN apt-get install -y openjdk-8-jdk
 # ./compile.sh without a local protoc dependency
 # TODO(mattkwong): install dependencies to support latest Bazel version if newer
 # version is needed
-RUN git clone https://github.com/bazelbuild/bazel.git /bazel &&   cd /bazel && git checkout tags/0.4.1 && ./compile.sh
+RUN git clone https://github.com/bazelbuild/bazel.git /bazel && \
+  cd /bazel && git checkout tags/0.4.1 && ./compile.sh
 RUN ln -s /bazel/output/bazel /bin/
 
-#===================
-# Docker "inception"
-# Note this is quite the ugly hack.
-# This makes sure that the docker binary we inject has its dependencies.
-RUN curl https://get.docker.com/ | sh
-RUN apt-get remove --purge -y docker-engine
+RUN apt-get update && apt-get -y install wget
+RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
+RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
+RUN apt-get update && apt-get -y install clang-format-3.8
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
 
 RUN mkdir /var/local/jenkins
 
+
 # Define the default command.
 CMD ["bash"]
diff --git a/tools/run_tests/dockerize/build_docker_and_run_tests.sh b/tools/run_tests/dockerize/build_docker_and_run_tests.sh
index c3219c533d5ec834e55020fbda04d8ac675aab48..b68ac89121cb96948ec695f597cae04da860be97 100755
--- a/tools/run_tests/dockerize/build_docker_and_run_tests.sh
+++ b/tools/run_tests/dockerize/build_docker_and_run_tests.sh
@@ -77,8 +77,6 @@ docker run \
   -v /tmp/ccache:/tmp/ccache \
   -v /tmp/npm-cache:/tmp/npm-cache \
   -v /tmp/xdg-cache-home:/tmp/xdg-cache-home \
-  -v /var/run/docker.sock:/var/run/docker.sock \
-  -v $(which docker):/bin/docker \
   -w /var/local/git/grpc \
   --name=$CONTAINER_NAME \
   $DOCKER_IMAGE_NAME \
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 1008c6b6cf578a4eb6eb01fc547ee6a072327e8f..924274191e9e8ec65b92468776e52517c774e431 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -820,8 +820,12 @@ class Sanity(object):
   def test_specs(self):
     import yaml
     with open('tools/run_tests/sanity/sanity_tests.yaml', 'r') as f:
+      environ={'TEST': 'true'}
+      if _is_use_docker_child():
+        environ['CLANG_FORMAT_SKIP_DOCKER'] = 'true'
       return [self.config.job_spec(cmd['script'].split(),
-                                   timeout_seconds=30*60, environ={'TEST': 'true'},
+                                   timeout_seconds=30*60,
+                                   environ=environ,
                                    cpu_cost=cmd.get('cpu_cost', 1))
               for cmd in yaml.load(f)]