Improve dbconfig support

debian/authentic2.postinst

@@ -37,11 +37,12 @@ case "$1" in
         . /usr/share/debconf/confmodule
         # source dbconfig-common shell library, and call the hook function
         if [ -f /usr/share/dbconfig-common/dpkg/postinst.pgsql ]; then
-            . /usr/share/dbconfig-common/dpkg/postinst.pgsql 
             dbc_generate_include=template:/etc/authentic2/db.conf
             dbc_generate_include_args="-o template_infile=/usr/share/authentic2/templates/db.conf -U"
-            dbc_generate_include_owner="authentic"
+            dbc_generate_include_owner="root:root"
             dbc_generate_include_perms="640"
+            dbc_sql_substitutions=yes
+            . /usr/share/dbconfig-common/dpkg/postinst.pgsql
             dbc_go authentic2 $@
         fi
 

debian/control

@@ -29,10 +29,9 @@ Package: authentic2
 Architecture: all
 Pre-Depends: python-django (>= 1.5)
 Depends: ${misc:Depends}, adduser,
-    python-authentic2,
-    python-psycopg2,
-    gunicorn,
-    dbconfig-common
+    python-authentic2, python-psycopg2,
+    gunicorn, dbconfig-common,
+    debconf | debconf-2.0, ucf
 Recommends: nginx, postgresql-client
 Description: Versatile identity server Python module
  Authentic is a versatile identity provider aiming to address a broad

debian/db.conf

@@ -1,4 +1,3 @@
-#!/bin/sh
 
 export DATABASE_ENGINE='django.db.backends.postgresql_psycopg2'
 export DATABASE_NAME='_DBC_DBNAME_'