diff --git a/README.md b/README.md
index ba8db614..36ef9d0a 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,12 @@ docker run -p 80:8080 swaggerapi/swagger-ui
 
 Will start nginx with swagger-ui on port 80.
 
+Or you can provide your own swagger.json on your host
+
+```
+docker run -p 80:8080 -e "SWAGGER_JSON=/foo/swagger.json" -v /bar:/foo swaggerapi/swagger-ui
+```
+
 ##### Prerequisites
 - Node 6.x
 - NPM 3.x
diff --git a/docker-run.sh b/docker-run.sh
index aa547321..f8086bd1 100644
--- a/docker-run.sh
+++ b/docker-run.sh
@@ -2,7 +2,8 @@
 
 set -e
 
-INDEX_FILE=/usr/share/nginx/html/index.html
+NGINX_ROOT=/usr/share/nginx/html
+INDEX_FILE=$NGINX_ROOT/index.html
 
 replace_in_index () {
   if [ "$1" != "**None**" ]; then
@@ -30,6 +31,7 @@ if [ "$OAUTH_ADDITIONAL_PARAMS" != "**None**" ]; then
 fi
 
 if [[ -f $SWAGGER_JSON ]]; then
+  cp $SWAGGER_JSON $NGINX_ROOT
   sed -i "s|http://petstore.swagger.io/v2/swagger.json|swagger.json|g" $INDEX_FILE
   sed -i "s|http://example.com/api|swagger.json|g" $INDEX_FILE
 else