Bug 1154827 - Add a base desktop 32 bit builder; r=dustin

For the most part, this has parity with the 64 bit container; minus custom MH configs.
Because Android builds do not have a 32 bit component, we don't have to worry about
supporting those in this container either.

testing/docker/desktop32-build/Dockerfile

@@ -0,0 +1,32 @@
+FROM          quay.io/mrrrgn/ubuntu32-build:0.0.1
+MAINTAINER    Morgan Reece Phillips <winter2718@gmail.com>
+
+# Add build scripts; these are the entry points from the taskcluster worker, and
+# operate on environment variables
+ADD                 bin /home/worker/bin
+RUN                 chmod +x /home/worker/bin/*
+
+##
+# COMPILER HACKS
+##
+ADD                 hacks.sh /tmp/
+RUN                 /tmp/hacks.sh
+
+# So that the compilers can find necessary libraries
+# gcc
+ENV LIBRARY_PATH    /usr/lib/i386-linux-gnu
+ENV PKG_CONFIG_PATH /usr/lib/i386-linux-gnu/pkgconfig
+
+# Stubbed out credentials; mozharness looks for this file an issues a WARNING
+# if it's not found, which causes the build to fail.  Note that this needs to
+# be in the parent of the workspace directory and in the directory where
+# mozharness is run (not its --work-dir).  See Bug 1169652.
+ADD                 oauth.txt /home/worker/
+
+# stubbed out buildprops, which keeps mozharness from choking
+# Note that this needs to be in the parent of the workspace directory and in
+# the directory where mozharness is run (not its --work-dir)
+ADD                 buildprops.json /home/worker/
+
+# Set a default command useful for debugging
+CMD ["/bin/bash", "--login"]

testing/docker/desktop32-build/REGISTRY

@@ -0,0 +1 @@
+quay.io/mrrrgn

testing/docker/desktop32-build/VERSION

@@ -0,0 +1 @@
+0.0.0

testing/docker/desktop32-build/bin/build.sh

@@ -0,0 +1,12 @@
+#! /bin/bash -vex
+
+set -x -e -v
+
+####
+# The default build works for any fx_desktop_build based mozharness job:
+# via linux-build.sh
+####
+
+. $HOME/bin/checkout-sources.sh
+
+. $WORKSPACE/build/src/testing/taskcluster/scripts/builder/build-linux.sh

testing/docker/desktop32-build/bin/checkout-sources.sh

@@ -0,0 +1,54 @@
+#! /bin/bash -vex
+
+set -x -e
+
+# Inputs, with defaults
+
+# mozharness builds use three repositories: gecko (source), mozharness (build
+# scripts) and tools (miscellaneous) for each, specify *_REPOSITORY.  If the
+# revision is not in the standard repo for the codebase, specify *_BASE_REPO as
+# the canonical repo to clone and *_HEAD_REPO as the repo containing the
+# desired revision.  For Mercurial clones, only *_HEAD_REV is required; for Git
+# clones, specify the branch name to fetch as *_HEAD_REF and the desired sha1
+# as *_HEAD_REV.  For compatibility, we also accept MOZHARNESS_{REV,REF}
+
+: GECKO_REPOSITORY              ${GECKO_REPOSITORY:=https://hg.mozilla.org/mozilla-central}
+: GECKO_BASE_REPOSITORY         ${GECKO_BASE_REPOSITORY:=${GECKO_REPOSITORY}}
+: GECKO_HEAD_REPOSITORY         ${GECKO_HEAD_REPOSITORY:=${GECKO_REPOSITORY}}
+: GECKO_HEAD_REV                ${GECKO_HEAD_REV:=default}
+: GECKO_HEAD_REF                ${GECKO_HEAD_REF:=${GECKO_HEAD_REV}}
+
+: MOZHARNESS_REPOSITORY         ${MOZHARNESS_REPOSITORY:=https://hg.mozilla.org/build/mozharness}
+: MOZHARNESS_BASE_REPOSITORY    ${MOZHARNESS_BASE_REPOSITORY:=${MOZHARNESS_REPOSITORY}}
+: MOZHARNESS_HEAD_REPOSITORY    ${MOZHARNESS_HEAD_REPOSITORY:=${MOZHARNESS_REPOSITORY}}
+: MOZHARNESS_REV                ${MOZHARNESS_REV:=production}
+: MOZHARNESS_REF                ${MOZHARNESS_REF:=${MOZHARNESS_REV}}
+: MOZHARNESS_HEAD_REV           ${MOZHARNESS_HEAD_REV:=${MOZHARNESS_REV}}
+: MOZHARNESS_HEAD_REF           ${MOZHARNESS_HEAD_REF:=${MOZHARNESS_REF}}
+
+: TOOLS_REPOSITORY              ${TOOLS_REPOSITORY:=https://hg.mozilla.org/build/tools}
+: TOOLS_BASE_REPOSITORY         ${TOOLS_BASE_REPOSITORY:=${TOOLS_REPOSITORY}}
+: TOOLS_HEAD_REPOSITORY         ${TOOLS_HEAD_REPOSITORY:=${TOOLS_REPOSITORY}}
+: TOOLS_HEAD_REV                ${TOOLS_HEAD_REV:=default}
+: TOOLS_HEAD_REF                ${TOOLS_HEAD_REF:=${TOOLS_HEAD_REV}}
+
+: MH_CUSTOM_BUILD_VARIANT_CFG   ${MH_CUSTOM_BUILD_VARIANT_CFG}
+: MH_BRANCH                     ${MH_BRANCH:=mozilla-central}
+: MH_BUILD_POOL                 ${MH_BUILD_POOL:=staging}
+
+: WORKSPACE                     ${WORKSPACE:=/home/worker/workspace}
+
+set -v
+
+# check out mozharness
+tc-vcs checkout mozharness $MOZHARNESS_BASE_REPOSITORY $MOZHARNESS_HEAD_REPOSITORY $MOZHARNESS_HEAD_REV $MOZHARNESS_HEAD_REF
+
+# check out tools where mozharness expects it to be ($PWD/build/tools and $WORKSPACE/build/tools)
+tc-vcs checkout $WORKSPACE/build/tools $TOOLS_BASE_REPOSITORY $TOOLS_HEAD_REPOSITORY $TOOLS_HEAD_REV $TOOLS_HEAD_REF
+if [ ! -d build ]; then
+    mkdir -p build
+    ln -s $WORKSPACE/build/tools build/tools
+fi
+
+# and check out mozilla-central where mozharness will use it as a cache (/builds/hg-shared)
+tc-vcs checkout $WORKSPACE/build/src $GECKO_BASE_REPOSITORY $GECKO_HEAD_REPOSITORY $GECKO_HEAD_REV $GECKO_HEAD_REF

testing/docker/desktop32-build/buildprops.json

@@ -0,0 +1,9 @@
+{
+  "properties": {
+    "buildername": ""
+  },
+  "sourcestamp": {
+    "changes": []
+  },
+  "comments": "TaskCluster Job"
+}

testing/docker/desktop32-build/hacks.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+##
+# Install compiler hacks, necessary for builds to work properly,
+# but ultimately to be removed in favor of something cleaner
+##
+
+ln -s /usr/include/linux/a.out.h /usr/include/a.out.h

testing/docker/desktop32-build/oauth.txt

@@ -0,0 +1,2 @@
+taskcluster_clientId = None
+taskcluster_accessToken = None