Switched from using image to using the official Rust image. Was experiencing cache issues before that, either due to the image, or due to Docker cache being weird...
# See https://github.com/LukeMathWalker/cargo-chef
-FROM lukemathwalker/cargo-chef as planner
+FROM rust as planner
WORKDIR /scryer-prolog
+RUN cargo install cargo-chef
COPY . .
RUN cargo chef prepare --recipe-path recipe.json
-FROM lukemathwalker/cargo-chef as cacher
+FROM rust as cacher
WORKDIR /scryer-prolog
+RUN cargo install cargo-chef
COPY --from=planner /scryer-prolog/recipe.json recipe.json
RUN cargo chef cook --release --recipe-path recipe.json
