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diff --git a/script/rails-deploy-before-down b/script/rails-deploy-before-down
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+#!/bin/bash
+#
+# rails-post-deploy
+# For Ruby on Rails, run this in exec_before_down in vhosts.pl.
+# This does all the tasks for a new deploying a new version that can
+# be done in a new directory before taking the site down; for example,
+# this is appropriate for long-running tasks like asset precompilation.
+#
+# Copyright (c) 2014 UK Citizens Online Democracy. All rights reserved.
+# Email: hello@mysociety.org; WWW: http://www.mysociety.org/
+
+set -e
+#set -x # debug
+
+TOP_DIR="$(dirname "$BASH_SOURCE")/.."
+cd "$TOP_DIR"
+
+# make sure that there is an app directory, so are in a rails app tree
+if ! [ -d app ]
+then
+    echo "Error: the 'app' directory didn't exist"
+    exit 1
+fi
+
+# read config file in for later (STAGING_SITE)
+if [ -e "config/general" ] || [ -e "config/general.yml" ]
+then
+    . commonlib/shlib/deployfns
+    read_conf config/general
+else
+    OPTION_DOMAIN=127.0.0.1:3000
+    OPTION_STAGING_SITE=1
+fi
+
+# create initial log files
+if [ -e $TOP_DIR/../logs ]
+then
+    # mySociety servers have logs dir in level above
+    if ! [ -h log ] && [ -d log ]
+    then
+        # If log is a directory rather than a symlink, move that
+        # directory out of the way:
+        mv log log.original
+    fi
+    ln -sfn $TOP_DIR/../logs log
+else
+    # otherwise just make the directory
+    if [ -h log ]
+    then
+        # remove any old-style symlink first
+        rm -f log
+    fi
+    mkdir -p log
+fi
+
+cd log
+touch development.log fastcgi.crash.log production.log test.log
+cd ..
+
+# Force appropriate environment in production
+if [ "$OPTION_STAGING_SITE" = "0" ]
+then
+    cat <<-END
+
+    *****************************************************************
+    WARNING: About to make config/rails_env.rb which, via special
+    code in config/boot.rb, forces the Rails environment to be
+    "production". If this is a development system, please edit your
+    config/general.yml file and set the STAGING_SITE option to 1,
+    and also delete the generated config/rails_env.rb file.
+    Alternatively, you can override config/rails_env.rb at any time
+    with an environment variable.
+    *****************************************************************
+
+END
+    echo "ENV['RAILS_ENV'] ||= 'production'" > config/rails_env.rb
+fi
+
+bundle_install_options=""
+if [ "$OPTION_STAGING_SITE" = "0" ]
+then
+    bundle_install_options="--without development:test --deployment"
+fi
+if [ "$OPTION_STAGING_SITE" = "1" ]
+then
+    bundle_install_options="--path vendor/bundle"
+fi
+if [ "$TRAVIS" = "true" ]
+then
+    bundle_install_options="--without development develop --deployment"
+fi
+bundle install $bundle_install_options
+
+bundle exec rake submodules:check
+
+bundle exec rake themes:install
+
+if [ "$OPTION_STAGING_SITE" = "0" ]
+then
+    bundle exec rake assets:precompile
+fi