Added new option to generate config file.

fix #130

README.rst

@@ -27,7 +27,9 @@ Usage::
   $ cd modoboa-installer
   $ sudo ./run.py <your domain>
 
-To customize the installation, look at the ``installer.cfg`` file.
+A configuration file will be automatically generated the first time
+you run the installer, please don't copy the
+``installer.cfg.template`` file manually.
 
 By default, the following components are installed:
 
@@ -37,6 +39,13 @@ By default, the following components are installed:
 * Dovecot
 * Amavis (with SpamAssassin and ClamAV)
 
+If you want to customize configuration before running the installer,
+run the following command::
+
+  $ ./run.py --stop-after-configfile-check <your domain>
+
+Make your modifications and run the installer as usual.
+
 If you want more information about the installation process, add the
 ``--debug`` option to your command line.
 

modoboa_installer/utils.py

@@ -146,7 +146,7 @@ def check_config_file(dest):
     printcolor(
         "Configuration file {} not found, creating new one."
         .format(dest), YELLOW)
-    with open("installer.cfg.default") as fp:
+    with open("installer.cfg.template") as fp:
         buf = fp.read()
     context = {
         "mysql_password": make_password(),

run.py

@@ -23,6 +23,9 @@ def main():
                         help="Force installation")
     parser.add_argument("--configfile", default="installer.cfg",
                         help="Configuration file to use")
+    parser.add_argument(
+        "--stop-after-configfile-check", action="store_true", default=False,
+        help="Check configuration, generate it if needed and exit")
     parser.add_argument("domain", type=str,
                         help="The main domain of your future mail server")
     args = parser.parse_args()
@@ -31,6 +34,8 @@ def main():
         utils.ENV["debug"] = True
     utils.printcolor("Welcome to Modoboa installer!", utils.GREEN)
     utils.check_config_file(args.configfile)
+    if args.stop_after_configfile_check:
+        return
     config = configparser.SafeConfigParser()
     with open(args.configfile) as fp:
         config.readfp(fp)