[IMP] support customization of the custom conf path.

This allow you to potentially build different configuration files
based on the environment you are using.

README.md

@@ -141,6 +141,9 @@ subsequently run.
 Files here will be environment-variable-expanded and concatenated in
 `/opt/odoo/auto/odoo.conf` in the entrypoint.
 
+You can use a different custom directory to concatenate the configuration by using the
+`CUSTOM_CONF_DIR` environment variable in the odoo service of the compose specific file.
+
 #### `/opt/odoo/custom/ssh`
 
 It must follow the same structure as a standard `~/.ssh` directory, including `config`

bin/config-generate

@@ -26,7 +26,8 @@ except ImportError:
 
 ODOO_VERSION = os.environ.get("ODOO_VERSION")
 TARGET_FILE = os.environ.get("ODOO_RC", "/opt/odoo/auto/odoo.conf")
-CONFIG_DIRS = ("/opt/odoo/common/conf.d", "/opt/odoo/custom/conf.d")
+CUSTOM_CONF_DIR = os.environ.get("CUSTOM_CONF_DIR", "/opt/odoo/custom/conf.d")
+CONFIG_DIRS = ("/opt/odoo/common/conf.d", CUSTOM_CONF_DIR)
 CONFIG_FILES = []
 
 # Read all configuraiton files found in those folders