Bug 1085620 part2: Support for emulator builds in the builder image. r=lightsofapollo

The setup of builder image moved to system-setup.sh script because
needs to do more complex work, like downloading repo and installing
mozilla buildtools package.

The build-emulator.sh script is reponsible for building emulators.
Besides the REPOSITORY and REVISION environment variables, it requires
TARGET and B2G_CONFIG too.

testing/docker/builder/Dockerfile

@@ -1,4 +1,4 @@
-FROM          quay.io/mozilla/base:0.0.2
+FROM          quay.io/mozilla/base:0.0.3
 MAINTAINER    Jonas Finnemann Jensen <jopsen@gmail.com>
 
 ENV PATH $PATH:/home/worker/bin/

testing/docker/builder/VERSION

@@ -1 +1 @@
-0.0.16
+0.0.17

testing/docker/builder/bin/build-emulator.sh

@@ -0,0 +1,39 @@
+#! /bin/bash -vex
+
+### Check that require variables are defined
+test $REPOSITORY  # Should be an hg repository url to pull from
+test $REVISION    # Should be an hg revision to pull down
+test $TARGET
+test $B2G_CONFIG
+
+# First check if the mozharness directory is available. This is intended to be
+# used locally in development to test mozharness changes:
+#
+#   $ docker -v your_mozharness:/home/worker/mozharness ...
+#
+if [ ! -d mozharness ]; then
+  hg clone https://hg.mozilla.org/build/mozharness mozharness
+fi
+
+OBJDIR=$HOME/object-folder
+mkdir -p $OBJDIR
+git clone https://git.mozilla.org/b2g/B2G.git $OBJDIR/B2G
+
+./mozharness/scripts/b2g_build.py \
+  --config b2g/taskcluster-emulator.py \
+  --disable-mock \
+  --work-dir=$OBJDIR/B2G \
+  --log-level=debug \
+  --target=$TARGET \
+  --b2g-config-dir=$B2G_CONFIG \
+  --checkout-revision=$REVISION \
+  --repo=$REPOSITORY
+
+# Move files into artifact locations!
+mkdir -p artifacts
+
+mv $OBJDIR/B2G/sources.xml artifacts/sources.xml
+mv $OBJDIR/B2G/out/target/product/generic/tests/gaia-tests.zip artifacts/gaia-tests.zip
+mv $OBJDIR/B2G/out/target/product/generic/tests/b2g-*.zip artifacts/b2g-tests.zip
+mv $OBJDIR/B2G/out/emulator.tar.gz artifacts/emulator.tar.gz
+mv $OBJDIR/B2G/objdir-gecko/dist/b2g-*.crashreporter-symbols.zip artifacts/b2g-crashreporter-symbols.zip

testing/docker/builder/system-setup.sh

@@ -3,6 +3,7 @@
 ############################### system-setup.sh ###############################
 
 home="/home/worker"
+tools_dir="/tmp/tools"
 
 mkdir -p $home/bin
 mkdir -p $home/tools
@@ -10,7 +11,32 @@ mkdir -p $home/tools/tooltool-cache
 
 wget -O $home/tools/tooltool.py https://raw.githubusercontent.com/mozilla/build-tooltool/master/tooltool.py
 
-chown -R worker:worker /home/worker/* /home/worker/.*
+chown -R worker:worker $home/* $home/.*
+
+# Install android repo tool
+curl https://storage.googleapis.com/git-repo-downloads/repo > $home/bin/repo
+chmod a+x $home/bin/repo
+
+# Install build tools
+cd /tmp
+hg clone http://hg.mozilla.org/build/tools/
+cd $tools_dir
+python setup.py install
+
+# Put gittool and hgtool in the PATH
+cp $tools_dir/buildfarm/utils/gittool.py $home/bin
+cp $tools_dir/buildfarm/utils/hgtool.py $home/bin
+chmod +x $home/bin/gittool.py
+chmod +x $home/bin/hgtool.py
+
+# Initialize git (makes repo happy)
+git config --global user.email "docker@docker.com"
+git config --global user.name "docker"
+
+cd $home
+
+# cleanup
+rm -rf $tools_dir
 
 # Remove the setup.sh setup, we don't really need this script anymore, deleting
 # it keeps the image as clean as possible.