fix: rust version

Dockerfile

@@ -1,30 +1,20 @@
-# Use the official Rust image as the base image
-FROM rust:latest
+FROM rust:1.75
 
-# Set the working directory
-WORKDIR .
+WORKDIR /app
 
-# Copy the Cargo.toml files
 COPY Cargo.toml config.toml ./
-
-# Copy the source code
 COPY src ./src
 
-# Accept a build argument for the build mode
 ARG BUILD_MODE=release
 
-# Build the application based on the build mode
 RUN if [ "$BUILD_MODE" = "debug" ]; then \
     cargo build; \
 else \
     cargo build --release; \
 fi
 
-# Expose the port your application uses
 EXPOSE 8080
 
-# Set the unbuffered environment variable
 ENV RUST_BACKTRACE "1"
 
-# Run the binary conditionally based on the build mode
 CMD if [ "$BUILD_MODE" = "debug" ]; then ./target/debug/starknetid_server; else ./target/release/starknetid_server; fi