Update Dockerfile

Dockerfile

@@ -1,5 +1,5 @@
 FROM debian
-RUN mkdir -p /app
+WORKDIR /app
 RUN apt-get update -y && apt-get install -y nodejs npm
 RUN npm install express http-proxy-middleware
 
@@ -24,5 +24,5 @@ EOF
 
 COPY anakin_proxy_linux_amd64 /app/anakin
 RUN chmod -R u+rwx,g+rwx,o+rwx /app && chmod +x /app/anakin
-WORKDIR /app
+
 CMD /app/anakin & node /app/index.js