update dockerfile

Dockerfile

@@ -1,12 +1,15 @@
-FROM rust:alpine as builder
-RUN apk add --no-cache musl-dev openssl openssl-dev pkgconfig
+FROM rust:bookworm as builder
+RUN apt update && apt install -y libssl-dev
 WORKDIR /home/rust/src
 COPY . .
-RUN cargo build --locked --release --features client,server,noise,websocket,hot-reload
+ARG FEATURES
+RUN cargo build --locked --release --features ${FEATURES:-default}
 RUN mkdir -p build-out/
 RUN cp target/release/rathole build-out/
 
-FROM scratch
+
+
+FROM gcr.io/distroless/cc-debian12
 WORKDIR /app
 COPY --from=builder /home/rust/src/build-out/rathole .
 USER 1000:1000