add host to fix db connection on windows

Author: SergeyPirogov

testcontainers/core/generic.py

@@ -29,10 +29,11 @@ def _connect(self):
     def get_connection_url(self):
         raise NotImplementedError
 
-    def _create_connection_url(self, dialect, username, password, port, db_name=None):
+    def _create_connection_url(self, dialect, username, password, host=None, port=None, db_name=None):
         if self._container is None:
             raise RuntimeError("container has not been started")
-        host = self.get_container_host_ip()
+        if not host:
+            host = self.get_container_host_ip()
         port = self.get_exposed_port(port)
         url = "{dialect}://{username}:{password}@{host}:{port}".format(
             dialect=dialect, username=username, password=password, host=host, port=port

testcontainers/postgres.py

@@ -46,9 +46,10 @@ def _configure(self):
         self.with_env("POSTGRES_PASSWORD", self.POSTGRES_PASSWORD)
         self.with_env("POSTGRES_DB", self.POSTGRES_DB)
 
-    def get_connection_url(self):
+    def get_connection_url(self, host="localhost"):
         return super()._create_connection_url(dialect="postgresql+psycopg2",
                                               username=self.POSTGRES_USER,
                                               password=self.POSTGRES_PASSWORD,
                                               db_name=self.POSTGRES_DB,
+                                              host=host,
                                               port=self.port_to_expose)