fix: add postgres files

files/postgres/pg_hba.conf

@@ -0,0 +1,6 @@
+# Before editing this file, please refer to official doc:
+# https://www.postgresql.org/docs/current/auth-pg-hba-conf.html
+
+# TYPE     DATABASE     USER       ADDRESS     METHOD
+local      sameuser     all                    peer        # Allow each unix user accessing its own db
+local      all          postgres               peer        # Allow postgres user accessing all dbs

files/postgres/postgresql.conf

@@ -0,0 +1,19 @@
+#-------------------------------------------------------------------------------
+# FILE LOCATIONS
+# Please refer to official doc before editing this section:
+# https://www.postgresql.org/docs/current/runtime-config-file-locations.html
+#-------------------------------------------------------------------------------
+
+# Change pg_hba location
+hba_file = "/etc/postgres/pg_hba.conf"
+
+
+#-------------------------------------------------------------------------------
+# CONNECTIONS AND AUTHENTICATION
+# Please refer to official doc before editing this section:
+# https://www.postgresql.org/docs/current/runtime-config-connection.html
+#-------------------------------------------------------------------------------
+
+# Empty listen addresses to disable listening via TCP/IP
+# because we want only uni socket connections
+listen_addresses = ""