set ARCH variable to system architecture

scripts/ax_init_standard_project.m4

@@ -181,6 +181,8 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
   _AM_SUBST_NOTMAKE([AUTHOR])
   DISTRO=$(lsb_release -sc 2>/dev/null || uname -s 2>/dev/null)
   AX_SUBST(DISTRO)
+  ARCH=$((@<:@@<:@ $(uname -sm) =~ 64 @:>@@:>@ && echo amd64) || (@<:@@<:@ $(uname -sm) =~ 'i?86' @:>@@:>@ && echo i386 || uname -sm))
+  AX_SUBST(ARCH)
   DISTRIBUTOR=$(lsb_release -si 2>/dev/null || uname -s 2>/dev/null)
   case "${DISTRIBUTOR// /-}" in
     (Ubuntu) UBUNTU=1; AX_SUBST(UBUNTU);;

scripts/bootstrap.sh

@@ -129,6 +129,7 @@ GENERATED FILES
     * resolve-debbuilddeps.sh - script to install debian package dependencies
     * resolve-rpmbuilddeps.sh - script to install RPM package dependencies
     * build-in-docker.sh - script to build the project encapsulated in a docker container
+    * build-in-docker.conf - additional configuration for build-in-docker.sh
     * build-resource-file.sh - build resource.qrc file from a resource directory
     * sql-to-dot.sed - script to convert SQL schema files to graphviz dot in doxygen
     * mac-create-app-bundle.sh - script to create apple mac os-x app-bundle
@@ -1162,6 +1163,12 @@ Libs: -L\${libdir} -l${PACKAGE_NAME#lib} @LDFLAGS@
 Cflags: -I\${includedir} @CPPFLAGS@
 Requires: @PKG_REQUIREMENTS@
 EOF
+to build-in-docker.conf <<EOF
+repos+=("Debian|Ubuntu-precise::::::universe")
+repos+=("Ubuntu-precise:::'deb http://archive.ubuntu.com/ubuntu precise universe'")
+envs+=("-e 'HOME=\${HOME}'")
+dirs+=("-v \${HOME}/.gnupg:\${HOME}/.gnupg:ro")
+EOF
 
 #### Cleanup If Makefile Exists ####
 if test -f makefile; then