diff --git a/WebSocketClient/Dockerfile b/WebSocketClient/Dockerfile
index e729244..b9e6f01 100644
--- a/WebSocketClient/Dockerfile
+++ b/WebSocketClient/Dockerfile
@@ -9,7 +9,9 @@ COPY . .
 RUN npm run build
 
 # Install Nginx
-RUN apt-get update && apt-get install -y nginx
+RUN apt-get update
+RUN apt-get install -y nginx
+RUN apt-get clean
 
 # Copy your static files into the Nginx document root directory
 RUN cp -r dist/* /var/www/html/
diff --git a/WebSocketLanguageServer/Dockerfile b/WebSocketLanguageServer/Dockerfile
index 8d180d3..94ef769 100644
--- a/WebSocketLanguageServer/Dockerfile
+++ b/WebSocketLanguageServer/Dockerfile
@@ -3,7 +3,8 @@ FROM node:18
 WORKDIR /usr/src/app
 
 RUN apt-get update
-RUN apt-get install z3
+RUN apt-get install -y z3
+RUN apt-get clean
 
 COPY package*.json ./