feat(rust): migrate to v2 tools

src/usr/local/buildpack/tools/v2/rust.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+function prepare_tool() {
+  create_tool_path
+  export_env RUST_BACKTRACE 1
+  export_env CARGO_HOME "${USER_HOME}/.cargo"
+  export_path "\$CARGO_HOME/bin"
+}
+
+function install_tool () {
+  local versioned_tool_path
+  local file
+  local arch=x86_64
+  local tool_path
+  tool_path=$(find_tool_path)
+
+  if [[ ! -d "${tool_path}" ]]; then
+    if [[ $(is_root) -ne 0 ]]; then
+      echo "${TOOL_NAME} not prepared"
+      exit 1
+    fi
+    prepare_tool
+    tool_path=$(find_tool_path)
+  fi
+
+  versioned_tool_path=$(create_versioned_tool_path)
+
+  file=$(get_from_url "https://static.rust-lang.org/dist/rust-${TOOL_VERSION}-${arch}-unknown-linux-gnu.tar.gz")
+  mkdir -p "${TEMP_DIR}/rust"
+  bsdtar --strip 1 -C "${TEMP_DIR}/rust" -xf "${file}"
+  "${TEMP_DIR}/rust/install.sh" --prefix="$versioned_tool_path" --components=cargo,rust-std-${arch}-unknown-linux-gnu,rustc
+  rm -rf "${TEMP_DIR}/rust"
+}
+
+function link_tool () {
+  local versioned_tool_path
+  versioned_tool_path=$(find_versioned_tool_path)
+
+  shell_wrapper "cargo" "${versioned_tool_path}/bin"
+  shell_wrapper "rustc" "${versioned_tool_path}/bin"
+
+  cargo --version
+  rustc --version
+}

test/rust/Dockerfile

@@ -1,20 +1,54 @@
 ARG IMAGE=containerbase/buildpack
-FROM ${IMAGE} as build
+ARG BUILDPACK_DEBUG
 
-ARG APT_HTTP_PROXY
+FROM ${IMAGE} as base
+
+RUN touch /.dummy
+
+COPY --chown=1000:0 test test
+
+WORKDIR /test
+
+ARG BUILDPACK_DEBUG
+
+RUN prepare-tool rust
+
+FROM base as build
+ARG BUILDPACK_DEBUG
 
 # renovate: datasource=docker versioning=docker
 RUN install-tool rust 1.65.0
 
 # renovate: datasource=docker versioning=docker
 RUN install-tool rust 1.65.0
 
-COPY --chown=1000:0 test test
 
-WORKDIR /test
+USER 1000
+
+#--------------------------------------
+# test a: root
+#--------------------------------------
+FROM build as testa
+
+RUN set -ex; \
+    cd a; \
+    cargo update; \
+    cargo update --manifest-path Cargo.toml --package serde;
+
+SHELL [ "/bin/sh", "-c" ]
+RUN rustc --version
+RUN cargo --version
+
+#--------------------------------------
+# test b: non-root
+#--------------------------------------
+FROM base as testb
+ARG BUILDPACK_DEBUG
 
 USER 1000
 
+# renovate: datasource=docker versioning=docker
+RUN install-tool rust 1.65.0
 
 RUN set -ex; \
     cd a; \
@@ -24,3 +58,11 @@ RUN set -ex; \
 SHELL [ "/bin/sh", "-c" ]
 RUN rustc --version
 RUN cargo --version
+
+#--------------------------------------
+# final
+#--------------------------------------
+FROM base
+
+COPY --from=testa /.dummy /.dummy
+COPY --from=testb /.dummy /.dummy