Staged dockerfile

Dockerfile

@@ -1,12 +1,26 @@
-FROM rust:1.70-slim
+FROM rust:1.67-slim as builder
 
-RUN apt-get update && \
-    apt-get install -y clang cmake build-essential
+WORKDIR /usr/src/app
+COPY . .
 
-WORKDIR /app
+# Will build and cache the binary and dependent crates in release mode
+RUN --mount=type=cache,target=/usr/local/cargo,from=rust:latest,source=/usr/local/cargo \
+    --mount=type=cache,target=target \
+    cargo build --release && mv ./target/release/mutinynet-faucet-rs ./mutinynet-faucet-rs
 
-COPY . .
+# Runtime image
+FROM debian:bookworm-slim
+
+RUN apt update && apt install -y openssl libpq-dev pkg-config libc6 clang cmake build-essential
+
+# Run as "app" user
+RUN useradd -ms /bin/bash app
+
+USER app
+WORKDIR /app
 
-RUN cargo build --release
+# Get compiled binaries from builder's cargo install directory
+COPY --from=builder /usr/src/app/mutinynet-faucet-rs /app/mutinynet-faucet-rs
 
-ENTRYPOINT ["/bin/bash", "-c", "./target/release/mutinynet-faucet-rs ${FLAGS}"]
+# Run the app
+CMD ./mutinynet-faucet-rs