port bot to rust, upgrade response, and cut away some of the tf cruft

packages/bot/Dockerfile

@@ -0,0 +1,22 @@
+# Leveraging the pre-built Docker images with 
+# cargo-chef and the Rust toolchain
+FROM lukemathwalker/cargo-chef:latest-rust-1.58.1 AS chef
+WORKDIR /app
+
+FROM chef AS planner
+COPY . .
+RUN cargo chef prepare --recipe-path recipe.json
+
+FROM chef AS builder 
+COPY --from=planner /app/recipe.json recipe.json
+# Build dependencies - this is the caching Docker layer!
+RUN cargo chef cook --release --recipe-path recipe.json
+# Build application
+COPY . .
+RUN cargo build --release --bin app
+
+# We do not need the Rust toolchain to run the binary!
+FROM gcr.io/distroless/base AS runtime
+WORKDIR /app
+COPY --from=builder /app/target/release/app /usr/local/bin
+ENTRYPOINT ["/usr/local/bin/app"]