Revert Rust nightly, update debian version

Dockerfile

@@ -1,9 +1,9 @@
-FROM debian:bookworm-slim AS base
+FROM debian:latest AS base
 
 ENV CARGO_NET_GIT_FETCH_WITH_CLI=true
 
-RUN apt update -qy
-RUN apt install -qy librocksdb-dev curl
+RUN apt update -qy && \
+    apt install -qy librocksdb-dev curl
 
 FROM base as build
 
@@ -13,12 +13,12 @@ ENV RUSTUP_HOME=/rust
 ENV CARGO_HOME=/cargo 
 ENV PATH=/cargo/bin:/rust/bin:$PATH
 
-RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain nightly
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
 
 WORKDIR /build
 COPY . .
 
-RUN cargo +nightly build --release -Z sparse-registry --bin electrs
+RUN cargo build --release --bin electrs
 
 FROM base as deploy