diff --git a/Dockerfile b/Dockerfile
index 195fc3fac955e949e59316177cad54d404420f8d..b97fc2928a17353d89527fdc9f49a94f9a6e5c3f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,7 @@ ENV API_KEY "**None**"
 ENV SWAGGER_JSON "/app/swagger.json"
 ENV PORT 8080
 ENV BASE_URL ""
+ENV SWAGGER_JSON_URL ""
 
 COPY ./docker/nginx.conf ./docker/cors.conf /etc/nginx/
 
diff --git a/docker/run.sh b/docker/run.sh
index a5a9064134a8737b07d0e1c4e467190846594498..e2de30539882fca68f7338feaa1c7ae643c7b0d1 100644
--- a/docker/run.sh
+++ b/docker/run.sh
@@ -29,8 +29,13 @@ fi
 
 replace_in_index myApiKeyXXXX123456789 $API_KEY
 
-if [[ -f $SWAGGER_JSON ]]; then
-  cp -s $SWAGGER_JSON $NGINX_ROOT
+if [ "$SWAGGER_JSON_URL" ]; then
+  sed -i "s|https://petstore.swagger.io/v2/swagger.json|$SWAGGER_JSON_URL|g" $INDEX_FILE
+  sed -i "s|http://example.com/api|$SWAGGER_JSON_URL|g" $INDEX_FILE
+fi
+
+if [[ -f "$SWAGGER_JSON" ]]; then
+  cp -s "$SWAGGER_JSON" "$NGINX_ROOT"
   REL_PATH="./$(basename $SWAGGER_JSON)"
   sed -i "s|https://petstore.swagger.io/v2/swagger.json|$REL_PATH|g" $INDEX_FILE
   sed -i "s|http://example.com/api|$REL_PATH|g" $INDEX_FILE