diff --git a/Dockerfile b/Dockerfile
index 0a45961..2fe0f80 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,4 @@
 FROM php:5.6-apache
 
-COPY gennum.php subnets.html img/ /var/www/html/
+COPY gennum.php subnets.html /var/www/html/
+COPY img/* /var/www/html/img/
diff --git a/README.md b/README.md
index a17716b..de6a984 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,10 @@
 # subnets
 Visual subnet calculator as seen at http://www.davidc.net/sites/default/subnets/subnets.html
+
+# Run with docker
+
+```
+cd <project folder>
+docker build . -t subnets
+docker run -d -p 5001:80 --name subnets subnets
+```