use rust:bookworm to get libssl 3

plus get back the caching

docker/Dockerfile

@@ -1,8 +1,27 @@
-FROM rust:latest as builder
+FROM rust:bookworm as builder
 
 WORKDIR /work
-COPY plane .
-RUN cargo build --release
+COPY Cargo.toml /work/
+COPY Cargo.lock /work/
+COPY plane/Cargo.toml /work/plane/Cargo.toml
+COPY plane/plane-tests/plane-test-macro/Cargo.toml /work/plane/plane-tests/plane-test-macro/Cargo.toml
+COPY plane/plane-tests/Cargo.toml /work/plane/plane-tests/Cargo.toml
+COPY plane/plane-dynamic/Cargo.toml /work/plane/plane-dynamic/Cargo.toml
+
+RUN mkdir /work/plane/src
+RUN echo "fn main() {}" > /work/plane/src/main.rs
+
+RUN mkdir -p /work/plane/plane-tests/src
+RUN mkdir -p /work/plane/plane-tests/plane-test-macro/src
+RUN mkdir -p /work/plane/plane-dynamic/src
+RUN touch /work/plane/plane-tests/plane-test-macro/src/lib.rs
+RUN touch /work/plane/plane-tests/src/lib.rs
+RUN touch /work/plane/plane-dynamic/src/lib.rs
+
+RUN cargo build -p plane --release --locked
+
+COPY . .
+RUN cargo build -p plane --release --locked
 
 FROM gcr.io/distroless/cc-debian12