diff --git a/docs/sources/examples/mongodb.rst b/docs/sources/examples/mongodb.rst
index e351b9b384..0d0f205cc8 100644
--- a/docs/sources/examples/mongodb.rst
+++ b/docs/sources/examples/mongodb.rst
@@ -24,7 +24,7 @@ Create an empty file called ``Dockerfile``:
touch Dockerfile
Next, define the parent image you want to use to build your own image on top of.
-Here, we’ll use `CentOS `_ (tag: ``latest``)
+Here, we’ll use `Ubuntu `_ (tag: ``latest``)
available on the `docker index`_:
.. code-block:: bash
@@ -65,11 +65,13 @@ run without needing to provide a special configuration file)
# Create the MongoDB data directory
RUN mkdir -p /data/db
-Finally, we'll expose the standard port that MongoDB runs on (27107)
+Finally, we'll expose the standard port that MongoDB runs on (27107) as well as
+define an ENTRYPOINT for the container.
.. code-block:: bash
EXPOSE 27017
+ ENTRYPOINT ["usr/bin/mongod"]
Now, lets build the image which will go through the ``Dockerfile`` we made and
run all of the commands.
@@ -84,10 +86,10 @@ the local port!
.. code-block:: bash
# Regular style
- MONGO_ID=$(docker run -d /mongodb mongod)
+ MONGO_ID=$(docker run -d /mongodb)
# Lean and mean
- MONGO_ID=$(docker run -d /mongodb mongod --noprealloc --smallfiles)
+ MONGO_ID=$(docker run -d /mongodb --noprealloc --smallfiles)
# Check the logs out
docker logs $MONGO_ID