fix(docker): Update to Rust 1.93 to support Edition 2024

backend/docker/Dockerfile

@@ -1,15 +1,46 @@
-FROM rust:latest AS builder
+# Production Dockerfile (Multi-stage build)
+# Stage 1: Build
+FROM rust:1.93-slim AS builder
+
 WORKDIR /app
-RUN apk add --no-cache musl-dev pkgconf openssl-dev
+
+# Install build dependencies
+RUN apt-get update && apt-get install -y \
+    pkg-config \
+    libssl-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy Cargo files first for better caching
 COPY Cargo.toml ./
+
+# Create dummy main.rs for dependency caching
 RUN mkdir src && echo 'fn main() {}' > src/main.rs
+
+# Build dependencies (this layer will be cached)
 RUN cargo build --release && rm -rf src
+
+# Copy actual source code
 COPY src ./src
+
+# Build the actual application
 RUN cargo build --release
 
-FROM alpine:latest
-RUN apk add --no-cache ca-certificates
-COPY --from=builder /app/target/release/normogen-backend /usr/local/bin/normogen-backend
-EXPOSE 8000
-CMD ["./normogen-backend"]
+# Stage 2: Runtime
+FROM debian:bookworm-slim
 
+WORKDIR /app
+
+# Install runtime dependencies only
+RUN apt-get update && apt-get install -y \
+    ca-certificates \
+    libssl3 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy the binary from builder stage
+COPY --from=builder /app/target/release/normogen-backend /usr/local/bin/normogen-backend
+
+# Expose port
+EXPOSE 8000
+
+# Run the application
+CMD ["./normogen-backend"]