diff --git a/Dockerfile b/Dockerfile
index ab6f232..54792d3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,13 +2,17 @@ FROM node:18-alpine
 
 WORKDIR /app
 
+RUN npm install -g ts-node
+
 COPY package*.json ./
 
-RUN npm install
+RUN adduser -D polymer
+RUN chown -R polymer:polymer /app
+USER polymer
 
-COPY src src
+RUN npm install
 
-RUN npm install -g ts-node
+COPY  src src
 
 EXPOSE 8000