Add comment to docker file

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@@ -14,12 +14,12 @@ RUN cargo chef cook --release --recipe-path recipe.json
 COPY . .
 RUN cargo build --release --bin verify-bot
 
-# We do not need the Rust toolchain to run the binary!
 FROM debian:bookworm-slim AS runtime
 WORKDIR /verify-bot
 
 COPY --from=builder /verify-bot/target/release/verify-bot /usr/local/bin
 
+# Install dependencies needed for verify-bot
 RUN apt-get update && apt-get -y install libssl-dev openssl ca-certificates tzdata && apt upgrade -y openssl && apt clean && rm -rf /var/lib/apt/lists/*
 
 ENTRYPOINT ["/usr/local/bin/verify-bot"]