Update dockerfiles to take advantage of BuildKit.

.webhook_bridge/pipeline-build-hash.yaml

@@ -114,6 +114,8 @@ spec:
             value: $(params.path-to-dockerfile)
           - name: EXTRA_ARGS
             value:
+              - "--opt"
+              - "target=$(params.target-name)"
               - --import-cache
               - "type=registry,ref=$(params.image-name):buildcache"
               - --export-cache

.webhook_bridge/pipeline-foreign-document-test.yaml

@@ -114,6 +114,8 @@ spec:
             value: $(params.path-to-dockerfile)
           - name: EXTRA_ARGS
             value:
+              - "--opt"
+              - "target=$(params.target-name)"
               - --import-cache
               - "type=registry,ref=$(params.image-name):buildcache"
               - --export-cache

.webhook_bridge/pipeline-format.yaml

@@ -114,6 +114,8 @@ spec:
             value: $(params.path-to-dockerfile)
           - name: EXTRA_ARGS
             value:
+              - "--opt"
+              - "target=$(params.target-name)"
               - --import-cache
               - "type=registry,ref=$(params.image-name):buildcache"
               - --export-cache

.webhook_bridge/pipeline-rust-clippy.yaml

@@ -114,6 +114,8 @@ spec:
             value: $(params.path-to-dockerfile)
           - name: EXTRA_ARGS
             value:
+              - "--opt"
+              - "target=$(params.target-name)"
               - --import-cache
               - "type=registry,ref=$(params.image-name):buildcache"
               - --export-cache

.webhook_bridge/pipeline-rust-test.yaml

@@ -114,6 +114,8 @@ spec:
             value: $(params.path-to-dockerfile)
           - name: EXTRA_ARGS
             value:
+              - "--opt"
+              - "target=$(params.target-name)"
               - --import-cache
               - "type=registry,ref=$(params.image-name):buildcache"
               - --export-cache

docker/organic_development/Dockerfile

@@ -1,7 +1,10 @@
-FROM rustlang/rust:nightly-alpine3.20 AS builder
+# syntax=docker/dockerfile:1
+ARG ALPINE_VERSION="3.20"
+
+FROM rustlang/rust:nightly-alpine$ALPINE_VERSION AS builder
 
 RUN apk add --no-cache musl-dev
-RUN cargo install --locked --no-default-features --features ci-autoclean cargo-cache
+RUN --mount=type=tmpfs,target=/tmp --mount=type=cache,target=/usr/local/cargo/registry,sharing=locked cargo install --locked --no-default-features --features ci-autoclean cargo-cache
 RUN rustup component add rustc-codegen-cranelift
 
 FROM builder AS format

docker/organic_test/Dockerfile

@@ -1,3 +1,6 @@
+# syntax=docker/dockerfile:1
+ARG ALPINE_VERSION="3.20"
+
 # ARG EMACS_REPO=https://git.savannah.gnu.org/git/emacs.git
 ARG EMACS_REPO=https://code.fizz.buzz/mirror/emacs.git
 
@@ -9,7 +12,7 @@ ARG ORG_MODE_REPO=https://code.fizz.buzz/mirror/org-mode.git
 ARG ORG_VERSION=abf5156096c06ee5aa05795c3dc5a065f76ada97
 
 
-FROM alpine:3.20 AS build
+FROM alpine:$ALPINE_VERSION AS build
 RUN apk add --no-cache build-base musl-dev git autoconf make texinfo gnutls-dev ncurses-dev gawk libgccjit-dev
 
 
@@ -28,7 +31,7 @@ RUN make DESTDIR="/root/dist" install
 FROM build AS build-org-mode
 ARG ORG_VERSION
 ARG ORG_MODE_REPO
-COPY --from=build-emacs /root/dist/ /
+COPY --link --from=build-emacs /root/dist/ /
 RUN mkdir /root/dist
 # Savannah does not allow fetching specific revisions, so we're going to have to put unnecessary load on their server by cloning main and then checking out the revision we want.
 RUN git clone $ORG_MODE_REPO /root/org-mode && git -C /root/org-mode checkout $ORG_VERSION
@@ -38,13 +41,13 @@ RUN make compile
 RUN make DESTDIR="/root/dist" install
 
 
-FROM rustlang/rust:nightly-alpine3.20 AS tester
+FROM rustlang/rust:nightly-alpine$ALPINE_VERSION AS tester
 ENV LANG=en_US.UTF-8
 RUN apk add --no-cache musl-dev ncurses gnutls libgccjit
-RUN cargo install --locked --no-default-features --features ci-autoclean cargo-cache
+RUN --mount=type=tmpfs,target=/tmp --mount=type=cache,target=/usr/local/cargo/registry,sharing=locked cargo install --locked --no-default-features --features ci-autoclean cargo-cache
 RUN rustup component add rustc-codegen-cranelift
-COPY --from=build-emacs /root/dist/ /
-COPY --from=build-org-mode /root/dist/ /
+COPY --link --from=build-emacs /root/dist/ /
+COPY --link --from=build-org-mode /root/dist/ /
 
 ENTRYPOINT ["cargo", "test"]
 
@@ -117,10 +120,10 @@ RUN rm $LITERATE_BUILD_EMACS_PATH/unused/aws.org
 FROM tester as foreign-document
 RUN apk add --no-cache bash coreutils
 RUN mkdir /foreign_documents
-COPY --from=foreign-document-gather /foreign_documents/howardabrams /foreign_documents/howardabrams
-COPY --from=foreign-document-gather /foreign_documents/doomemacs /foreign_documents/doomemacs
-COPY --from=foreign-document-gather /foreign_documents/worg /foreign_documents/worg
-COPY --from=foreign-document-gather /foreign_documents/literate_build_emacs /foreign_documents/literate_build_emacs
-COPY --from=build-org-mode /root/org-mode /foreign_documents/org-mode
-COPY --from=build-emacs /root/emacs /foreign_documents/emacs
+COPY --link --from=foreign-document-gather /foreign_documents/howardabrams /foreign_documents/howardabrams
+COPY --link --from=foreign-document-gather /foreign_documents/doomemacs /foreign_documents/doomemacs
+COPY --link --from=foreign-document-gather /foreign_documents/worg /foreign_documents/worg
+COPY --link --from=foreign-document-gather /foreign_documents/literate_build_emacs /foreign_documents/literate_build_emacs
+COPY --link --from=build-org-mode /root/org-mode /foreign_documents/org-mode
+COPY --link --from=build-emacs /root/emacs /foreign_documents/emacs
 ENTRYPOINT ["cargo", "run", "--bin", "foreign_document_test", "--features", "compare,foreign_document_test", "--profile", "release-lto"]