caching of dependencies from a private registry

[Vsev0l0d]

Cargo chef speeds up the build very well, but I noticed that packages from the private registry are downloaded again every time. Is it possible to configure their caching too?

18:46:46  #18 [builder 5/7] RUN mold -run cargo chef cook --verbose --release --recipe-path recipe.json
18:46:46  #18 0.508     Updating crates.io index
18:46:46  #18 0.837     Updating `kc_rs_private` index
18:46:51  #18 4.346  Downloading crates ...
18:46:51  #18 4.571   Downloaded kc_grpc v0.0.8 (registry `kc_rs_private`)
18:46:51  #18 4.853   Downloaded kc_nlp_grpc v0.0.2 (registry `kc_rs_private`)
18:46:51  #18 4.901   Downloaded amq-protocol v7.2.2
...

Dockerfile

FROM  harbor.com/infra/cargo-chef:0.1.66-rust-1.78-slim-bookworm AS chef

WORKDIR /app

FROM chef AS planner
COPY . .

ARG CARGO_REGISTRY_DEFAULT_ARG
ENV CARGO_REGISTRY_DEFAULT=$CARGO_REGISTRY_DEFAULT_ARG
ARG CARGO_REGISTRIES_KC_RS_PRIVATE_INDEX_ARG
ENV CARGO_REGISTRIES_KC_RS_PRIVATE_INDEX=$CARGO_REGISTRIES_KC_RS_PRIVATE_INDEX_ARG
ARG CARGO_REGISTRIES_KC_RS_PRIVATE_TOKEN_ARG
ENV CARGO_REGISTRIES_KC_RS_PRIVATE_TOKEN=$CARGO_REGISTRIES_KC_RS_PRIVATE_TOKEN_ARG

RUN cargo chef prepare --recipe-path recipe.json

FROM chef AS builder
COPY --from=planner /app/deployments/app/install_latest_protoc.sh .

RUN apt-get update \
    && apt-get install --no-install-recommends -y \
    curl \
    unzip \
    pkg-config \
    libssl-dev \
    clang \
    git \
    mold \
    && bash -ue ./install_latest_protoc.sh \
    && rm -rf /var/lib/apt/lists/*

COPY --from=planner /app/recipe.json recipe.json


ARG CARGO_REGISTRY_DEFAULT_ARG
ENV CARGO_REGISTRY_DEFAULT=$CARGO_REGISTRY_DEFAULT_ARG
ARG CARGO_REGISTRIES_KC_RS_PRIVATE_INDEX_ARG
ENV CARGO_REGISTRIES_KC_RS_PRIVATE_INDEX=$CARGO_REGISTRIES_KC_RS_PRIVATE_INDEX_ARG
ARG CARGO_REGISTRIES_KC_RS_PRIVATE_TOKEN_ARG
ENV CARGO_REGISTRIES_KC_RS_PRIVATE_TOKEN=$CARGO_REGISTRIES_KC_RS_PRIVATE_TOKEN_ARG
ARG CARGO_BUILD_JOBS_ARG=default
ENV CARGO_BUILD_JOBS=$CARGO_BUILD_JOBS_ARG

RUN mold -run cargo chef cook --verbose --release --recipe-path recipe.json
...

.cargo/config.toml

[registry]
default = "kc_rs_private"

[registries.kc_rs_private]
index = "sparse+https://my-artifactory.com/artifactory/api/cargo/kc-rust-back-cargo-local/index/"
token = "Bearer xxxxx