regenerate dockerfiles

tools/dockerfile/interoptest/grpc_interop_csharp/Dockerfile

@@ -100,14 +100,6 @@ RUN mkdir warmup \
     && cd .. \
     && rm -rf warmup
 
-# 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
 

tools/dockerfile/interoptest/grpc_interop_csharpcoreclr/Dockerfile

@@ -100,14 +100,6 @@ RUN mkdir warmup \
     && cd .. \
     && rm -rf warmup
 
-# 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
 

tools/dockerfile/interoptest/grpc_interop_cxx/Dockerfile

@@ -68,14 +68,6 @@ RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 t
 # C++ dependencies
 RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang && apt-get clean
 
-# 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
 

tools/dockerfile/interoptest/grpc_interop_node/Dockerfile

@@ -78,14 +78,6 @@ RUN /bin/bash -l -c "nvm install 8 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm install 9 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm install 10 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm alias default 10"
-# 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
 

tools/dockerfile/interoptest/grpc_interop_nodepurejs/Dockerfile

@@ -63,14 +63,6 @@ RUN /bin/bash -l -c "nvm install 8 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm install 9 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm install 10 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm alias default 10"
-# 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
 

tools/dockerfile/interoptest/grpc_interop_php/Dockerfile

@@ -57,14 +57,6 @@ RUN apt-get update && apt-get install -y time && apt-get clean
 RUN apt-get update && apt-get install -y \
     git php5 php5-dev phpunit unzip
 
-# 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
 

tools/dockerfile/interoptest/grpc_interop_php7/Dockerfile

@@ -60,14 +60,6 @@ RUN cd /var/local/git/php-src \
   && make \
   && make install
 
-# 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
 

tools/dockerfile/interoptest/grpc_interop_python/Dockerfile

@@ -68,14 +68,6 @@ RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 t
 RUN curl https://bootstrap.pypa.io/get-pip.py | python3.4
 RUN python3.4 -m pip install virtualenv
 
-# 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
 

tools/dockerfile/interoptest/grpc_interop_ruby/Dockerfile

@@ -79,14 +79,6 @@ RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
 RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.1' >> ~/.bashrc"
 RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
 
-# 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
 

tools/dockerfile/test/csharp_jessie_x64/Dockerfile

@@ -104,14 +104,6 @@ RUN mkdir warmup \
     && cd .. \
     && rm -rf warmup
 
-# 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
 

tools/dockerfile/test/cxx_alpine_x64/Dockerfile

@@ -50,14 +50,6 @@ RUN git clone https://github.com/gflags/gflags.git && cd gflags && git checkout
 RUN cd gflags && cmake . && make && make install
 RUN ln -s /usr/local/include/gflags /usr/include/gflags
 
-# 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
 

tools/dockerfile/test/cxx_jessie_x64/Dockerfile

@@ -110,14 +110,6 @@ RUN cd llvm-build && cmake \
   ../llvm
 RUN make -C llvm-build -j 12 && make -C llvm-build install && rm -rf llvm-build
 
-# 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
 

tools/dockerfile/test/cxx_jessie_x86/Dockerfile

@@ -72,14 +72,6 @@ RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 t
 # C++ dependencies
 RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang && apt-get clean
 
-# 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
 

tools/dockerfile/test/cxx_ubuntu1604_x64/Dockerfile

@@ -72,14 +72,6 @@ RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 t
 # C++ dependencies
 RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang && apt-get clean
 
-# 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
 

tools/dockerfile/test/cxx_ubuntu1710_x64/Dockerfile

@@ -72,14 +72,6 @@ RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 t
 # C++ dependencies
 RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang && apt-get clean
 
-# 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
 

tools/dockerfile/test/fuzzer/Dockerfile

@@ -110,14 +110,6 @@ RUN cd llvm-build && cmake \
   ../llvm
 RUN make -C llvm-build -j 12 && make -C llvm-build install && rm -rf llvm-build
 
-# 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
 

tools/dockerfile/test/multilang_jessie_x64/Dockerfile

@@ -156,14 +156,6 @@ ENV PATH ~/.local/bin:$PATH
 # Install Mako to generate files in grpc/grpc-node
 RUN pip install Mako
 
-# 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
 

tools/dockerfile/test/node_jessie_x64/Dockerfile

@@ -93,14 +93,6 @@ RUN /bin/bash -l -c "nvm install 8 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm install 9 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm install 10 && npm config set cache /tmp/npm-cache"
 RUN /bin/bash -l -c "nvm alias default 10"
-# 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
 

tools/dockerfile/test/php7_jessie_x64/Dockerfile

@@ -79,14 +79,6 @@ RUN pip install --upgrade pip==10.0.1
 RUN pip install virtualenv
 RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 twisted==17.5.0
 
-# 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
 

tools/dockerfile/test/php_jessie_x64/Dockerfile

@@ -76,14 +76,6 @@ RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 t
 RUN apt-get update && apt-get install -y \
     git php5 php5-dev phpunit unzip
 
-# 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
 

tools/dockerfile/test/python_jessie_x64/Dockerfile

@@ -72,14 +72,6 @@ RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 t
 RUN curl https://bootstrap.pypa.io/get-pip.py | python3.4
 RUN python3.4 -m pip install virtualenv
 
-# 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
 

tools/dockerfile/test/python_pyenv_x64/Dockerfile

@@ -95,14 +95,6 @@ RUN pyenv local 3.5-dev 3.6-dev pypy-5.3.1
 RUN curl https://bootstrap.pypa.io/get-pip.py | python3.4
 RUN python3.4 -m pip install virtualenv
 
-# 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
 

tools/dockerfile/test/ruby_jessie_x64/Dockerfile

@@ -83,14 +83,6 @@ RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
 RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.1' >> ~/.bashrc"
 RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
 
-# 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
 

tools/dockerfile/test/sanity/Dockerfile

@@ -113,14 +113,6 @@ ENV CLANG_FORMAT=clang-format
 RUN ln -s /clang+llvm-5.0.0-linux-x86_64-ubuntu14.04/bin/clang-tidy /usr/local/bin/clang-tidy
 ENV CLANG_TIDY=clang-tidy
 
-# 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