fix docker image

Dockerfile

@@ -3,7 +3,7 @@ WORKDIR /usr/src/crane
 COPY . .
 RUN cargo install --path .
 
-FROM debian:bullseye-slim
+FROM debian:bookworm-slim
 RUN apt-get update && apt-get install -y ca-certificates && rm -rf /var/lib/apt/lists/*
 COPY --from=builder /usr/local/cargo/bin/crane /usr/local/bin/crane
 EXPOSE 8594

README.md

@@ -9,7 +9,7 @@
 Crane is a simple, fast, and secure tool written in Rust for downloading and deploying your `.tar.gz` archive files without the need for server passwords or keys.
 
 ## Features
-1. **Fast:** Written in Rust, **Crane** offers a lightweight binary size of just 3MB and a Docker image of only 88MB, ensuring quick and efficient deployment.
+1. **Fast:** Written in Rust, **Crane** offers a lightweight binary size of just 3MB and a Docker image of only 34MB, ensuring quick and efficient deployment.
 
 2. **Simple:** With a single GET request, Crane can download and unzip your `.tar.gz` file, making the deployment process effortless.