Working multi-stage container build

server/Containerfile

@@ -1,7 +1,26 @@
+# The rust:latest-alpine uses musl libc
 FROM docker.io/rust:latest as builder
-workdir /app
-ADD . /app
-RUN cargo clean
-RUN cargo build --release
+WORKDIR /build
+ADD . /build
+RUN apt update
+RUN apt install musl musl-dev musl-tools -y
+RUN rustup target add x86_64-unknown-linux-musl
+RUN cargo build --target x86_64-unknown-linux-musl --release
+
+FROM docker.io/alpine:latest as runner
+
+# Add a non-root user for running the server
+RUN addgroup -S user && adduser -S user -G user
+
+# Copy the server binary and the public directory
+WORKDIR /runner
+COPY --from=builder /build/target/x86_64-unknown-linux-musl/release/server /runner/server
+COPY --from=builder /build/public /runner/public
+
+# Make sure the user can access the files
+RUN chown -R user:user /runner
+USER user
+
+# Run the server
 EXPOSE 8080
-CMD ["cargo", "run", "--release"]
+CMD ["./server"]