Added build action and kubernetes manifests

Dockerfile

@@ -0,0 +1,22 @@
+FROM rust:1.85 AS base
+ENV CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
+RUN cargo install cargo-chef --locked --version 0.1.71 && \
+    cargo install cargo-auditable --locked --version 0.6.6
+WORKDIR /app
+
+FROM base AS planner
+COPY . .
+RUN cargo chef prepare --recipe-path recipe.json
+
+FROM base AS builder
+COPY --from=planner /app/recipe.json recipe.json
+ENV RUSTC_BOOTSTRAP=1
+RUN cargo chef cook --release --recipe-path recipe.json
+
+COPY . .
+ENV RUSTC_BOOTSTRAP=1
+RUN cargo auditable build --release
+
+FROM gcr.io/distroless/cc-debian12:nonroot AS runtime
+COPY --from=builder /app/target/release/tunnel_rs /tunnel_rs
+CMD ["/tunnel_rs"]