Add initial travis build configuration

We need to use docker here as travis only provides Ubuntu 14.04 based
images which are not enough for us to build everything.

scripts/clean-build.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+
+set -ex
+
+apt-get update -qq
+apt-get install -qq -y \
+  build-essential \
+  cmake \
+  cmake-data \
+  debhelper \
+  dbus \
+  git \
+  google-mock \
+  libboost-dev \
+  libboost-filesystem-dev \
+  libboost-log-dev \
+  libboost-iostreams-dev \
+  libboost-program-options-dev \
+  libboost-system-dev \
+  libboost-test-dev \
+  libboost-thread-dev \
+  libcap-dev \
+  libdbus-1-dev \
+  libdbus-cpp-dev \
+  libegl1-mesa-dev \
+  libgles2-mesa-dev \
+  libglib2.0-dev \
+  libglm-dev \
+  libgtest-dev \
+  liblxc1 \
+  libprotobuf-dev \
+  libsdl2-dev \
+  lxc-dev \
+  pkg-config \
+  protobuf-compiler
+
+cd /anbox
+
+# In cases where anbox comes directly from a checked out Android
+# build environment we miss some symlinks which are present on
+# the host and don't have a valid git repository in that case.
+git clean -fdx . || true
+git reset --hard || true
+
+mkdir build || rm -rf build/*
+cd build
+cmake ..
+make -j10
+make test