dockerfile added (glibc6 error on running)

crates/exporter/Dockerfile

@@ -0,0 +1,17 @@
+FROM rust:1.75 AS builder
+
+WORKDIR /app
+
+COPY . .
+
+RUN cargo build --release
+
+FROM debian:bullseye-slim
+
+WORKDIR /app
+# RUN sudo apt update
+# RUN sudo apt install libc6
+COPY --from=builder /app/target/release/exporter /app/server
+EXPOSE 9100
+
+CMD ["/app/server"]