build first set of docker container in pipline and place them in the the github registry (#142)

- added a Dockerfile for the thre containers
- added a workflow step to build and placing the container in the
registry
- added a docker-compose.yaml to use the build images
- added a docker compose to build the images locally and a script for
prebuild steps

tests/config/config_providers_test.py

@@ -58,6 +58,13 @@ def test_json_provider_get_postgres() -> None:
             assert config.host == data["postgres"]["host"]
             assert config.database == data["postgres"]["database"]
             assert config.port == data["postgres"]["port"]
+            assert isinstance(str(config), str)
+            assert "Mongo" not in str(config)
+            assert "Postgre" in str(config)
+
+            assert isinstance(str(JsonFileConfigProvider("someWhere")), str)
+            assert str(config) in str(JsonFileConfigProvider("someWhere"))
+            assert "Mongo" not in str(JsonFileConfigProvider("someWhere"))
 
 
 def test_json_provider_get_mongo() -> None:
@@ -82,6 +89,14 @@ def test_json_provider_get_mongo() -> None:
             assert config.database == data["mongo"]["database"]
             assert config.port == data["mongo"]["port"]
 
+            assert isinstance(str(config), str)
+            assert "Mongo" in str(config)
+            assert "Postgre" not in str(config)
+
+            assert isinstance(str(JsonFileConfigProvider("someWhere")), str)
+            assert str(config) in str(JsonFileConfigProvider("someWhere"))
+            assert "Postgre" not in str(JsonFileConfigProvider("someWhere"))
+
 
 def test_env_provider_constructor() -> None:
     with patch("aki_prj23_transparenzregister.config.config_providers.os") as mock_os: