also removing grpc_java_android docker file
diff --git a/tools/dockerfile/grpc_java_android/Dockerfile b/tools/dockerfile/grpc_java_android/Dockerfile
deleted file mode 100644
index 8df0707..0000000
--- a/tools/dockerfile/grpc_java_android/Dockerfile
+++ /dev/null
@@ -1,62 +0,0 @@
-# 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.
-
-# Dockerfile for the gRPC Java dev image
-FROM grpc/java_base
-
-# Required by accessing Android's aapt
-RUN apt-get install -y lib32stdc++6 lib32z1 && apt-get clean
-
-# Install Android SDK 24.2
-RUN curl -L http://dl.google.com/android/android-sdk_r24.2-linux.tgz | tar xz -C /usr/local
-
-# Environment variables
-ENV ANDROID_HOME /usr/local/android-sdk-linux
-ENV PATH $PATH:$ANDROID_HOME/tools
-ENV PATH $PATH:$ANDROID_HOME/platform-tools
-# Some old Docker versions consider '/' as HOME
-ENV HOME /root
-
-# Update sdk for android API level 19 (4.4), 21 (5.0), 22 (5.1).
-RUN echo y | android update sdk --all --filter platform-tools,build-tools-22.0.1,sys-img-armeabi-v7a-addon-google_apis-google-22,sys-img-armeabi-v7a-addon-google_apis-google-21,sys-img-armeabi-v7a-android-19,android-22,android-21,android-19,addon-google_apis-google-22,addon-google_apis-google-21,addon-google_apis-google-19,extra-android-m2repository,extra-google-m2repository --no-ui --force
-
-
-# Create AVDs with API level 19,21,22
-RUN echo no | android create avd --force -n avd-google-api-22 -t "Google Inc.:Google APIs:22" --abi google_apis/armeabi-v7a && \
- echo no | android create avd --force -n avd-google-api-21 -t "Google Inc.:Google APIs:21" --abi google_apis/armeabi-v7a && \
- echo no | android create avd --force -n avd-google-api-19 -t "Google Inc.:Google APIs:19" --abi default/armeabi-v7a
-
-# Pull gRPC Java and trigger download of needed Maven and Gradle artifacts.
-RUN git clone --depth 1 https://github.com/grpc/grpc-java.git /var/local/git/grpc-java && \
- cd /var/local/git/grpc-java && \
- ./gradlew grpc-core:install grpc-stub:install grpc-okhttp:install grpc-protobuf-nano:install grpc-compiler:install
-
-# Config android sdk for gradle and build apk to trigger download of needed Maven and Gradle artifacts.
-RUN cd /var/local/git/grpc-java/android-interop-testing && echo "sdk.dir=/usr/local/android-sdk-linux" > local.properties && \
- ../gradlew assembleDebug
diff --git a/tools/dockerfile/grpc_java_android/README.md b/tools/dockerfile/grpc_java_android/README.md
deleted file mode 100644
index 5c897cd..0000000
--- a/tools/dockerfile/grpc_java_android/README.md
+++ /dev/null
@@ -1,42 +0,0 @@
-GRPC Android Dockerfile
-====================
-
-Dockerfile for creating the gRPC Android integration test image
-
-As of 2015/05 this
- - is based on the gRPC Java base
- - installs Android sdk 24.2
- - creates an AVD for API level 22
- - Pulls gRpc Android test App from github
-
-Usage
------
-
-Start the emulator in a detached container, the argument is the name of the AVD you want to start:
-
-```
-$ sudo docker run --name=grpc_android_test -d grpc/android /var/local/git/grpc-java/android-interop-testing/start-emulator.sh avd-google-api-22
-```
-
-You can use the following cammand to wait until the emulator is ready:
-```
-$ sudo docker exec grpc_android_test /var/local/git/grpc-java/android-interop-testing/wait-for-emulator.sh
-```
-
-When you want to update the apk, run:
-```
-$ sudo docker exec grpc_android_test bash -c "cd /var/local/git/grpc-java && git pull origin master && ./gradlew grpc-core:install grpc-stub:install grpc-okhttp:install grpc-protobuf-nano:install grpc-compiler:install && cd android-interop-testing && ../gradlew installDebug"
-```
-It pulls the fresh code of gRpc Java and our interop test app from github, build and install it to the runing emulator (so you need to make sure there is a runing emulator).
-
-Trigger the integration test:
-```
-$ sudo docker exec grpc_android_test adb -e shell am instrument -w -e server_host <hostname or ip address> -e server_port 8030 -e server_host_override foo.test.google.fr -e use_tls true -e use_test_ca true -e test_case all io.grpc.android.integrationtest/.TesterInstrumentation
-```
-
-You can also use the android/adb cammands to get more info, such as:
-```
-$ sudo docker exec grpc_android_test android list avd
-$ sudo docker exec grpc_android_test adb devices
-$ sudo docker exec grpc_android_test adb logcat
-```
diff --git a/tools/dockerfile/grpc_java_base/Dockerfile b/tools/dockerfile/grpc_java_base/Dockerfile
deleted file mode 100644
index 9b80bbf..0000000
--- a/tools/dockerfile/grpc_java_base/Dockerfile
+++ /dev/null
@@ -1,55 +0,0 @@
-# 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 debian:latest
-
-# Install JDK 8 and Git
-#
-# TODO(temiola): simplify this if/when a simpler process is available.
-#
-RUN echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections && \
- echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list && \
- echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list && \
- apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886 && \
- apt-get update && \
- apt-get -y install \
- git \
- libapr1 \
- oracle-java8-installer \
- && \
- apt-get clean && rm -r /var/cache/oracle-jdk8-installer/
-
-ENV JAVA_HOME /usr/lib/jvm/java-8-oracle
-ENV PATH $PATH:$JAVA_HOME/bin
-
-# Trigger download of as many Gradle artifacts as possible.
-RUN git clone --recursive --depth 1 https://github.com/grpc/grpc-java.git && \
- cd grpc-java && \
- ./gradlew build -PskipCodegen=true && \
- rm -r "$(pwd)"
diff --git a/tools/dockerfile/grpc_java_base/README.md b/tools/dockerfile/grpc_java_base/README.md
deleted file mode 100644
index 446287f..0000000
--- a/tools/dockerfile/grpc_java_base/README.md
+++ /dev/null
@@ -1,9 +0,0 @@
-GRPC Java Base Dockerfile
-=========================
-
-Dockerfile for creating the Java gRPC development Docker instance.
-
-As of 2014/12 this
- - installs tools and dependencies needed to build gRPC Java
- - does not install gRPC Java itself; a separate Dockerfile that depends on
- this one will do that.
\ No newline at end of file