Experimental Docker image for godot

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diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
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+FROM ubuntu:14.04
+MAINTAINER Mohammad Rezai, https://github.com/mrezai
+WORKDIR /godot-dev
+COPY scripts/install-android-tools /godot-dev/
+ENV DEBIAN_FRONTEND noninteractive
+RUN dpkg --add-architecture i386 && \
+	apt-get update && \
+	apt-get upgrade -y && \
+	apt-get install --no-install-recommends -y -q \
+	build-essential gcc-multilib g++-multilib mingw32 mingw-w64 scons pkg-config libx11-dev libxcursor-dev \
+	libasound2-dev libfreetype6-dev libgl1-mesa-dev libglu-dev libssl-dev libxinerama-dev libudev-dev \
+	git wget openjdk-7-jdk libbcprov-java libc6:i386 libncurses5:i386 libstdc++6:i386 zlib1g:i386 lib32z1
+
diff --git a/tools/docker/README.md b/tools/docker/README.md
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+## A Docker image to build Linux, Windows and Android godot binaries.

+

+The main reason to write this, is to provide a simple way in all platforms to integrate external godot modules and build a custom version of godot.

+

+## usage

+1. Install docker on Linux or docker toolbox on Windows or Mac.

+2. Open a terminal on linux or "Docker Quickstart Terminal" on Windows or Mac.

+3. Run command:

+	- Linux: `cd`

+	- Windows: `cd /c/Users/YOUR_USERNAME`

+	- Mac: `cd /Users/YOUR_USERNAME`

+4. Get godot source code: `git clone https://github.com/godotengine/godot.git`

+5. Run command: `cd godot/tools/docker`

+6. Run command: `docker build -t godot .`(In Linux run Docker commands with `sudo` or add your user to docker group before run the Docker commands). The godot docker image will be build after a while.

+7. Run command:

+	- Linux: `docker run -it --name=godot-dev -v /home/YOUR_USERNAME/godot:/godot-dev/godot godot`

+	- Windows: `docker run -it --name=godot-dev -v /c/Users/YOUR_USERNAME/godot:/godot-dev/godot godot`

+	- Mac: `docker run -it --name=godot-dev -v /Users/YOUR_USERNAME/godot:/godot-dev/godot godot`

+	You are in the godot-dev container and /godot-dev directory now.

+8. Run `./install-android-tools` to download and install all android development tools.

+9. Run command: `source ~/.bashrc`

+10. Run command: `cd godot`

+11. Run command: `scons p=android target=release` to test everything is ok. You can set platform to x11, windows, android, haiku and server.

+

+After use and exit, you can use this environment again by open terminal and type commands: `docker start godot-dev && docker attach godot-dev`.

+

+### Windows and Mac stuffs:

+

+- Speed up compilation:

+	- Exit from container.

+	- Run command: `docker-machine stop`

+	- Open "Oracle VM VirtualBox".

+	- In settings of default VM increase CPU cores and RAM to suitable values.

+	- Run command: `docker-machine start`

+	- Run command: `docker start godot-dev && docker attach godot-dev`

+

+- ssh to VM(can be useful sometimes):

+	- `docker-machine ssh`

+	

+Check docker and boot2docker projects for more details.

diff --git a/tools/docker/scripts/install-android-tools b/tools/docker/scripts/install-android-tools
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+#!/bin/bash
+
+BASH_RC=~/.bashrc
+GODOT_BUILD_TOOLS_PATH=/godot-dev/build-tools
+mkdir -p $GODOT_BUILD_TOOLS_PATH
+cd $GODOT_BUILD_TOOLS_PATH
+
+ANDROID_BASE_URL=http://dl.google.com/android
+
+ANDROID_SDK_RELEASE=android-sdk_r24.4.1
+ANDROID_SDK_DIR=android-sdk-linux
+ANDROID_SDK_FILENAME=$ANDROID_SDK_RELEASE-linux.tgz
+ANDROID_SDK_URL=$ANDROID_BASE_URL/$ANDROID_SDK_FILENAME
+ANDROID_SDK_PATH=$GODOT_BUILD_TOOLS_PATH/$ANDROID_SDK_DIR
+ANDROID_SDK_SHA1=725bb360f0f7d04eaccff5a2d57abdd49061326d
+
+ANDROID_NDK_RELEASE=android-ndk-r10e
+ANDROID_NDK_DIR=$ANDROID_NDK_RELEASE
+ANDROID_NDK_FILENAME=$ANDROID_NDK_RELEASE-linux-x86_64.bin
+ANDROID_NDK_URL=$ANDROID_BASE_URL/ndk/$ANDROID_NDK_FILENAME
+ANDROID_NDK_PATH=$GODOT_BUILD_TOOLS_PATH/$ANDROID_NDK_DIR
+ANDROID_NDK_MD5=19af543b068bdb7f27787c2bc69aba7f
+
+echo
+echo "Download and install Android development tools ..."
+echo
+
+if [ ! -e $ANDROID_SDK_FILENAME ]; then
+	echo "Downloading: Android SDK ..."
+	wget $ANDROID_SDK_URL
+else
+	echo $ANDROID_SDK_SHA1 $ANDROID_SDK_FILENAME > $ANDROID_SDK_FILENAME.sha1
+	sha1sum --check --strict $ANDROID_SDK_FILENAME.sha1
+	if [ ! $? -eq 0 ]; then
+		echo "Downloading: Android SDK ..."
+		wget $ANDROID_SDK_URL
+	fi
+fi
+
+if [ ! -d $ANDROID_SDK_DIR ]; then
+	tar -xvzf $ANDROID_SDK_FILENAME
+fi
+
+if [ ! -e $ANDROID_NDK_FILENAME ]; then
+	echo "Downloading: Android NDK ..."
+	wget $ANDROID_NDK_URL
+else
+	echo $ANDROID_NDK_MD5 $ANDROID_NDK_FILENAME > $ANDROID_NDK_FILENAME.md5
+	md5sum --check --strict $ANDROID_NDK_FILENAME.md5
+	if [ ! $? -eq 0 ]; then
+		echo "Downloading: Android NDK ..."
+		wget $ANDROID_NDK_URL
+	fi
+fi
+
+if [ ! -d $ANDROID_NDK_DIR ]; then
+	chmod a+x $ANDROID_NDK_FILENAME
+	./$ANDROID_NDK_FILENAME
+	echo
+fi
+
+cd $ANDROID_SDK_DIR/tools
+chmod a+x android
+
+if ! ./android list target | grep -q 'android-19'; then
+	echo "Installing: Android Tools ..."
+	echo y | ./android update sdk --no-ui --all --filter "platform-tools,android-19,build-tools-19.1.0,\
+	extra-android-m2repository,extra-android-support,extra-google-google_play_services,extra-google-m2repository,\
+	extra-google-play_apk_expansion,extra-google-play_billing,extra-google-play_licensing"
+fi
+
+EXPORT_VAL="export ANDROID_HOME=$ANDROID_SDK_PATH"
+if ! grep -q "^$EXPORT_VAL" $BASH_RC; then
+        echo $EXPORT_VAL >> ~/.bashrc
+fi
+
+
+EXPORT_VAL="export ANDROID_NDK_ROOT=$ANDROID_NDK_PATH"
+if ! grep -q "^$EXPORT_VAL" $BASH_RC; then
+        echo $EXPORT_VAL >> ~/.bashrc
+fi
+
+EXPORT_VAL="export PATH=$PATH:$ANDROID_SDK_PATH/tools"
+if ! grep -q "^export PATH=.*$ANDROID_SDK_PATH/tools.*" $BASH_RC; then
+        echo $EXPORT_VAL >> ~/.bashrc
+fi
+
+echo
+echo "Done!"
+echo
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