add TOC to practices page

practices/README.md

+[[_TOC_]]
+
 # Good Docker Practices
 
 ## Keep the Docker image simple (micro-services)
@@ -25,20 +27,20 @@ should work; people should think".
 ## When possible use container orchestration
 
 Getting containers to interact and cooperate can be tricky, so use one of
-container tools like Kubernetes or Docker Compose to do this.
+the orcestration tools like Kubernetes or Docker Compose to do this.
 
 ## Use CI/CD (i.e., automation) to keep Docker images up-to-date
 
 Set up automation to rebuild your Docker images periodically making sure
-that you disable caching when building. This way you will get the most
-up-to-date and secure base images for your images.
+that you disable caching when building. This way your image will have the
+most up-to-date and secure base images.
 
 ## Send diagnostic output to standard output
 
 In the traditional server world we are used to sending logs to files. With
 Docker containers it is usually better to send diagnostic output to
 standard output. Kubernetes and other orchestration tools are designed
-with the expectation that logging is senet to standard output.
+with the expectation that logging is sent to standard output.
 
 ## Run containers in "read-only" mode