diff --git a/README.md b/README.md
index ab1975d..1e2f062 100644
--- a/README.md
+++ b/README.md
@@ -7,17 +7,16 @@ It gives guidance on getting started for end-users, developers building with Tah
 
 ## Building
 
-This web page is built and deployed by CI.
+This web page is built and deployed by CI.  A preview is also automaticaly genereated for PRs made from branches local to this repository (require push/write permission).
 
 If you want to pre-view your changes on your local machine before pushing commits, you might want to start a development server.
 
-Issuing this command on a system with Docker runs a web server on http://localhost:4000/ that re-builds the page automatically on source file change:
+Issuing this command on a system with Docker runs a web server on http://localhost:4000/ that re-builds and refresh the page automatically on source file change:
 
 ```sh
 docker-compose up
 ```
 
-
 ## Contributing
 
 We welcome contributions!  Easiest is to open tickets or pull requests directly.  If unsure, join the IRC or ask on the Tahoe-LAFS developer mailing list.
diff --git a/docker-compose.yml b/docker-compose.yml
index 1191885..5ece0a7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -13,6 +13,7 @@ services:
     working_dir: /appdata
     ports:
       - "4000:4000"
+      - "35729:35729"
     stdin_open: true
     tty: true
     hostname: jekyll.local
diff --git a/docker/jekyll/Dockerfile b/docker/jekyll/Dockerfile
index e5a57eb..1313b96 100644
--- a/docker/jekyll/Dockerfile
+++ b/docker/jekyll/Dockerfile
@@ -40,4 +40,4 @@ RUN echo "gem: --no-document --user-install --bindir /home/${user}/bin" >> /home
 ENV PATH=/home/${user}/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
 
 ENTRYPOINT ["jekyll"]
-CMD ["server", "--verbose", "--host", "0.0.0.0", "--incremental"]
+CMD ["server", "--verbose", "--host", "0.0.0.0", "--incremental", "--livereload"]