diff --git a/README.rst b/README.rst
index 8df059e96..855d66249 100644
--- a/README.rst
+++ b/README.rst
@@ -59,7 +59,7 @@ Usage within Docker (i.e. in a CI)
 
 When trying to launch a testcontainer from within a Docker container two things have to be provided:
 
-1. The container has to provide a docker client installation. Either use an image that has docker pre-installed (e.g. the [official docker images](https://hub.docker.com/_/docker)) or install the client from within the `Dockerfile` specification.
+1. The container has to provide a docker client installation. Either use an image that has docker pre-installed (e.g. the `official docker images <https://hub.docker.com/_/docker>`_) or install the client from within the `Dockerfile` specification.
 2. The container has to have access to the docker daemon which can be achieved by mounting `/var/run/docker.sock` or setting the `DOCKER_HOST` environment variable as part of your `docker run` command.
 
 
diff --git a/setup.cfg b/setup.cfg
index 3b42fe85a..c82dc448f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -13,3 +13,4 @@ description-file = README.md
 
 [flake8]
 max-line-length = 100
+exclude = .git,__pycache__,build,dist,venv,.venv
diff --git a/setup.py b/setup.py
index 8d2b117b2..2f866d34d 100644
--- a/setup.py
+++ b/setup.py
@@ -70,5 +70,5 @@
     },
     long_description_content_type="text/x-rst",
     long_description=long_description,
-    python_requires='>=3.5',
+    python_requires='>=3.6',
 )
diff --git a/testcontainers/oracle.py b/testcontainers/oracle.py
index ea4d0b3cc..883c36af7 100644
--- a/testcontainers/oracle.py
+++ b/testcontainers/oracle.py
@@ -9,7 +9,7 @@ class OracleDbContainer(DbContainer):
     -------
     ::
 
-        with OracleDbContainer():
+        with OracleDbContainer() as oracle:
             e = sqlalchemy.create_engine(oracle.get_connection_url())
             result = e.execute("select 1 from dual")
     """
@@ -24,3 +24,6 @@ def get_connection_url(self):
             dialect="oracle", username="system", password="oracle", port=self.container_port,
             db_name="xe"
         )
+
+    def _configure(self):
+        pass