Update rust in docker (#48)

Reviewed-on: #48
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build the application
 # Use a specific Rust version for reproducibility. Choose one that matches your development environment.
 # Using slim variant for smaller base image
-FROM rust:1.86 as builder
+FROM rust:1.88 as builder
 
 # Set the working directory inside the container
 WORKDIR /usr/src/app
@@ -68,4 +68,4 @@ EXPOSE 3000
 
 # Set the command to run your application
 # Ensure this matches the binary name copied above
-CMD ["./icarus_auth"]
+CMD ["./icarus_auth"]