Add support for setting Postgres port via env var

Signed-off-by: James Carnegie <me@kipz.org>

Author: kipz

vulnerablecode/settings.py

@@ -94,7 +94,7 @@
         "USER": os.environ.get("VC_DB_USER", "vulnerablecode"),
         "PASSWORD": os.environ.get("VC_DB_PASSWORD", "vulnerablecode"),
         "HOST": os.environ.get("VC_DB_HOST", "localhost"),
-        "PORT": "5432",
+        "PORT": os.environ.get("VC_DB_PORT", "5432"),
     }
 }