fix: Update Dockerfile to use Alpine 3.21 as base image

Dockerfile

@@ -11,11 +11,15 @@ COPY . .
 RUN go build -o gosearch .
 
 # Use a minimal base image for final deployment
-FROM alpine:latest
+FROM alpine:3.21
 # Set working directory in the container
-WORKDIR /root/
+WORKDIR /
 # Copy the built binary from the builder stage
 COPY --from=builder /app/gosearch .
+# Add executing User
+RUN addgroup gosearch 
+RUN useradd -g gosearch gosearch
+USER gosearch
 # Expose the application port
 EXPOSE 3000
 # Run the application