diff --git a/fann-builder/Dockerfile b/fann-builder/Dockerfile
index fdcde02..ad563ae 100644
--- a/fann-builder/Dockerfile
+++ b/fann-builder/Dockerfile
@@ -1,15 +1,15 @@
 FROM alpine:latest
 
-# Install all necessary tools: git, build tools
-RUN apk add --no-cache \
-    git \
-    build-base
+# Install necessary tools
+RUN apk add --no-cache git build-base
 
-# Create a non-root user to run the build
-RUN adduser -D builder
+# Create builder user with arguments for UID/GID
+ARG UID=1000
+ARG GID=1000
+RUN addgroup -g $GID builder && \
+    adduser -D -u $UID -G builder builder
 USER builder
 WORKDIR /home/builder
 
-# The default command will be the build script
 COPY build.sh .
 CMD ["/bin/sh", "build.sh"]
\ No newline at end of file