auth-server: Dockerfile: Add dockerfile

auth-server/Dockerfile

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+# === Chef === #
+FROM --platform=arm64 rust:latest AS chef
+
+# Create a build dir and add local dependencies
+WORKDIR /build
+
+COPY ./rust-toolchain ./rust-toolchain
+RUN cat rust-toolchain | xargs rustup toolchain install
+
+# Install cargo-chef
+RUN cargo install cargo-chef
+
+# === Sources === #
+FROM chef AS sources
+WORKDIR /build
+COPY ./Cargo.toml ./Cargo.lock ./
+COPY ./auth-server ./auth-server
+
+# === Builder === #
+# Pull the sources into their own layer
+FROM chef AS builder
+
+# Disable compiler warnings and enable backtraces for panic debugging
+ENV RUSTFLAGS=-Awarnings
+ENV RUST_BACKTRACE=1
+ENV CARGO_HTTP_CHECK_REVOKE=false
+
+COPY --from=sources /build /build
+WORKDIR /build
+
+# Install protoc, openssl, and pkg-config
+RUN apt-get update && \
+    apt-get install -y pkg-config libssl-dev libclang-dev libpq-dev ca-certificates
+
+# Update Cargo.toml to include only "auth-server" in workspace members
+RUN sed -i '/members[[:space:]]*=[[:space:]]*\[/,/\]/c\members = ["auth-server"]' Cargo.toml
+RUN cargo chef prepare --recipe-path recipe.json --bin auth-server
+
+# Build only the dependencies to cache them in this layer
+RUN cargo chef cook --release --recipe-path recipe.json
+
+COPY --from=sources /build/auth-server /build/auth-server
+WORKDIR /build
+
+RUN cargo build --release -p auth-server
+
+# === Release stage === #
+FROM --platform=arm64 debian:bookworm-slim
+RUN apt-get update && \
+    apt-get install -y libssl-dev ca-certificates libpq-dev
+
+# Copy the binary from the build stage
+COPY --from=builder /build/target/release/auth-server /bin/auth-server
+
+ENTRYPOINT ["/bin/auth-server"]
+CMD ["--datadog-logging"]