[script/bootstrap] Keep OS packages updated in development environments

This adds a script, `bin/install_packages`, that will install packages
listed in versions of `conf/packages*` and calls it from the bootstrap
script in a way appropriate to the environment it is being run under.

This should ensure that, for example, changes to dependencies will be
applied to Vagrant machines in-between tagged releases.

The default packages file used will be `packages.generic`.

3 files changed, 24 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d7a5714b..437f48656 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -84,6 +84,7 @@
         - Add configuration for setting Content-Security-Policy header.
         - Add banner on staging website/emails, and STAGING_FLAGS option to hide it.
         - Do not hard code site name in database fixture.
+        - Ensure OS dependencies are kept updated in development environments.
     - Open311 improvements:
         - Support use of 'private' service definition <keywords> to mark
           reports made in that category private. #2488
diff --git a/bin/install_packages b/bin/install_packages
new file mode 100755
index 000000000..7b4bfd8e1
--- /dev/null
+++ b/bin/install_packages
@@ -0,0 +1,13 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "${BASH_SOURCE[0]}")/.."
+
+PACKAGE_FILE=conf/packages
+
+[ -n "$1" ] && PACKAGE_FILE="conf/packages.${1}"
+
+apt-get update
+
+grep -v ^# $PACKAGE_FILE | grep -v ^$ | xargs apt-get install -qq -y
+
diff --git a/script/bootstrap b/script/bootstrap
index dfebd7449..5345b163e 100755
--- a/script/bootstrap
+++ b/script/bootstrap
@@ -4,4 +4,14 @@ set -e
 cd "$(dirname "$0")/.."
 
 git submodule --quiet update --init --recursive --rebase
+
+# Let's see if we can't work out where we might be running.
+if cut -d/ -f2 /proc/self/cgroup | sort -u | grep -q docker ; then
+    # Docker
+    sudo bin/install_packages docker
+else
+    # Fallback
+    sudo bin/install_packages generic
+fi
+
 bin/install_perl_modules